Imported Upstream version 1.0.0upstream/1.0.0

1 files changed, 5173 insertions, 0 deletions

diff --git a/web/dashboard.js b/web/dashboard.js
new file mode 100755
index 000000000..079209d78
--- /dev/null
+++ b/web/dashboard.js
@@ -0,0 +1,5173 @@
+// You can set the following variables before loading this script:
+//
+// var netdataNoDygraphs = true;		// do not use dygraph
+// var netdataNoSparklines = true;		// do not use sparkline
+// var netdataNoPeitys = true;			// do not use peity
+// var netdataNoGoogleCharts = true;	// do not use google
+// var netdataNoMorris = true;			// do not use morris
+// var netdataNoEasyPieChart = true;	// do not use easy pie chart
+// var netdataNoGauge = true;			// do not use gauge.js
+// var netdataNoD3 = true;				// do not use D3
+// var netdataNoC3 = true;				// do not use C3
+// var netdataNoBootstrap = true;		// do not load bootstrap
+// var netdataDontStart = true;			// do not start the thread to process the charts
+//
+// You can also set the default netdata server, using the following.
+// When this variable is not set, we assume the page is hosted on your
+// netdata server already.
+// var netdataServer = "http://yourhost:19999"; // set your NetData server
+
+//(function(window, document, undefined) {
+	// fix IE issue with console
+	if(!window.console){ window.console = {log: function(){} }; }
+
+	// global namespace
+	var NETDATA = window.NETDATA || {};
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// Detect the netdata server
+
+	// http://stackoverflow.com/questions/984510/what-is-my-script-src-url
+	// http://stackoverflow.com/questions/6941533/get-protocol-domain-and-port-from-url
+	NETDATA._scriptSource = function() {
+		var script = null;
+
+		if(typeof document.currentScript !== 'undefined') {
+			script = document.currentScript;
+		}
+		else {
+			var all_scripts = document.getElementsByTagName('script');
+			script = all_scripts[all_scripts.length - 1];
+		}
+
+		if (typeof script.getAttribute.length !== 'undefined')
+			script = script.src;
+		else
+			script = script.getAttribute('src', -1);
+
+		return script;
+	};
+
+	if(typeof netdataServer !== 'undefined')
+		NETDATA.serverDefault = netdataServer;
+	else {
+		var s = NETDATA._scriptSource();
+		NETDATA.serverDefault = s.replace(/\/dashboard.js(\?.*)*$/g, "");
+	}
+
+	if(NETDATA.serverDefault === null)
+		NETDATA.serverDefault = '';
+	else if(NETDATA.serverDefault.slice(-1) !== '/')
+		NETDATA.serverDefault += '/';
+
+	// default URLs for all the external files we need
+	// make them RELATIVE so that the whole thing can also be
+	// installed under a web server
+	NETDATA.jQuery       		= NETDATA.serverDefault + 'lib/jquery-1.12.0.min.js';
+	NETDATA.peity_js     		= NETDATA.serverDefault + 'lib/jquery.peity.min.js';
+	NETDATA.sparkline_js 		= NETDATA.serverDefault + 'lib/jquery.sparkline.min.js';
+	NETDATA.easypiechart_js 	= NETDATA.serverDefault + 'lib/jquery.easypiechart.min.js';
+	NETDATA.gauge_js 			= NETDATA.serverDefault + 'lib/gauge.min.js';
+	NETDATA.dygraph_js   		= NETDATA.serverDefault + 'lib/dygraph-combined.js';
+	NETDATA.dygraph_smooth_js   = NETDATA.serverDefault + 'lib/dygraph-smooth-plotter.js';
+	NETDATA.raphael_js   		= NETDATA.serverDefault + 'lib/raphael-min.js';
+	NETDATA.morris_js    		= NETDATA.serverDefault + 'lib/morris.min.js';
+	NETDATA.d3_js  		  		= NETDATA.serverDefault + 'lib/d3.min.js';
+	NETDATA.c3_js  		  		= NETDATA.serverDefault + 'lib/c3.min.js';
+	NETDATA.c3_css   			= NETDATA.serverDefault + 'css/c3.min.css';
+	NETDATA.morris_css   		= NETDATA.serverDefault + 'css/morris.css';
+	NETDATA.google_js    		= 'https://www.google.com/jsapi';
+
+	NETDATA.themes = {
+		default: {
+			bootstrap_css: NETDATA.serverDefault + 'css/bootstrap.min.css',
+			dashboard_css: NETDATA.serverDefault + 'dashboard.css',
+			background: '#FFFFFF',
+			foreground: '#000000',
+			grid: '#DDDDDD',
+			axis: '#CCCCCC',
+			colors: [ 	'#3366CC', '#DC3912',   '#109618', '#FF9900',   '#990099', '#DD4477',
+						'#3B3EAC', '#66AA00',   '#0099C6', '#B82E2E',   '#AAAA11', '#5574A6',
+						'#994499', '#22AA99',   '#6633CC', '#E67300',   '#316395', '#8B0707',
+						'#329262', '#3B3EAC' ],
+			easypiechart_track: '#f0f0f0',
+			easypiechart_scale: '#dfe0e0',
+			gauge_pointer: '#C0C0C0',
+			gauge_stroke: '#F0F0F0',
+			gauge_gradient: true
+		},
+		slate: {
+			bootstrap_css: NETDATA.serverDefault + 'css/bootstrap.slate.min.css',
+			dashboard_css: NETDATA.serverDefault + 'dashboard.slate.css',
+			background: '#272b30',
+			foreground: '#C8C8C8',
+			grid: '#373b40',
+			axis: '#373b40',
+/*			colors: [ 	'#55bb33', '#ff2222',   '#0099C6', '#faa11b',   '#adbce0', '#DDDD00',
+						'#4178ba', '#f58122',   '#a5cc39', '#f58667',   '#f5ef89', '#cf93c0',
+						'#a5d18a', '#b8539d',   '#3954a3', '#c8a9cf',   '#c7de8a', '#fad20a',
+						'#a6a479', '#a66da8' ],
+*/
+			colors: [ 	'#66AA00', '#FE3912',   '#3366CC', '#D66300',   '#0099C6', '#DDDD00',
+						'#3B3EAC', '#EE9911',   '#BB44CC', '#C83E3E',   '#990099', '#CC7700',
+						'#22AA99', '#109618',   '#6633CC', '#DD4477',   '#316395', '#8B0707',
+						'#329262', '#3B3EFF' ],
+			easypiechart_track: '#373b40',
+			easypiechart_scale: '#373b40',
+			gauge_pointer: '#474b50',
+			gauge_stroke: '#373b40',
+			gauge_gradient: false
+		}
+	};
+
+	if(typeof netdataTheme !== 'undefined' && typeof NETDATA.themes[netdataTheme] !== 'undefined')
+		NETDATA.themes.current = NETDATA.themes[netdataTheme];
+	else
+		NETDATA.themes.current = NETDATA.themes.default;
+
+	NETDATA.colors = NETDATA.themes.current.colors;
+
+	// these are the colors Google Charts are using
+	// we have them here to attempt emulate their look and feel on the other chart libraries
+	// http://there4.io/2012/05/02/google-chart-color-list/
+	//NETDATA.colors		= [ '#3366CC', '#DC3912', '#FF9900', '#109618', '#990099', '#3B3EAC', '#0099C6',
+	//						'#DD4477', '#66AA00', '#B82E2E', '#316395', '#994499', '#22AA99', '#AAAA11',
+	//						'#6633CC', '#E67300', '#8B0707', '#329262', '#5574A6', '#3B3EAC' ];
+
+	// an alternative set
+	// http://www.mulinblog.com/a-color-palette-optimized-for-data-visualization/
+	//                         (blue)     (red)      (orange)   (green)    (pink)     (brown)    (purple)   (yellow)   (gray)
+	//NETDATA.colors 		= [ '#5DA5DA', '#F15854', '#FAA43A', '#60BD68', '#F17CB0', '#B2912F', '#B276B2', '#DECF3F', '#4D4D4D' ];
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// the defaults for all charts
+
+	// if the user does not specify any of these, the following will be used
+
+	NETDATA.chartDefaults = {
+		host: NETDATA.serverDefault,	// the server to get data from
+		width: '100%',					// the chart width - can be null
+		height: '100%',					// the chart height - can be null
+		min_width: null,				// the chart minimum width - can be null
+		library: 'dygraph',				// the graphing library to use
+		method: 'average',				// the grouping method
+		before: 0,						// panning
+		after: -600,					// panning
+		pixels_per_point: 1,			// the detail of the chart
+		fill_luminance: 0.8				// luminance of colors in solit areas
+	}
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// global options
+
+	NETDATA.options = {
+		pauseCallback: null,			// a callback when we are really paused
+
+		pause: false,					// when enabled we don't auto-refresh the charts
+
+		targets: null,					// an array of all the state objects that are
+										// currently active (independently of their
+										// viewport visibility)
+
+		updated_dom: true,				// when true, the DOM has been updated with
+										// new elements we have to check.
+
+		auto_refresher_fast_weight: 0,	// this is the current time in ms, spent
+										// rendering charts continiously.
+										// used with .current.fast_render_timeframe
+
+		page_is_visible: true,			// when true, this page is visible
+
+		auto_refresher_stop_until: 0,	// timestamp in ms - used internaly, to stop the
+										// auto-refresher for some time (when a chart is
+										// performing pan or zoom, we need to stop refreshing
+										// all other charts, to have the maximum speed for
+										// rendering the chart that is panned or zoomed).
+										// Used with .current.global_pan_sync_time
+
+		last_resized: new Date().getTime(), // the timestamp of the last resize request
+
+		crossDomainAjax: false,			// enable this to request crossDomain AJAX
+
+		last_page_scroll: 0,			// the timestamp the last time the page was scrolled
+
+		// the current profile
+		// we may have many...
+		current: {
+			pixels_per_point: 1,		// the minimum pixels per point for all charts
+										// increase this to speed javascript up
+										// each chart library has its own limit too
+										// the max of this and the chart library is used
+										// the final is calculated every time, so a change
+										// here will have immediate effect on the next chart
+										// update
+
+			idle_between_charts: 100,	// ms - how much time to wait between chart updates
+
+			fast_render_timeframe: 200, // ms - render continously until this time of continious
+										// rendering has been reached
+										// this setting is used to make it render e.g. 10
+										// charts at once, sleep idle_between_charts time
+										// and continue for another 10 charts.
+
+			idle_between_loops: 500,	// ms - if all charts have been updated, wait this
+										// time before starting again.
+
+			idle_parallel_loops: 100,	// ms - the time between parallel refresher updates
+
+			idle_lost_focus: 500,		// ms - when the window does not have focus, check
+										// if focus has been regained, every this time
+
+			global_pan_sync_time: 1000,	// ms - when you pan or zoon a chart, the background
+										// autorefreshing of charts is paused for this amount
+										// of time
+
+			sync_selection_delay: 1500,	// ms - when you pan or zoom a chart, wait this amount
+										// of time before setting up synchronized selections
+										// on hover.
+
+			sync_selection: true,		// enable or disable selection sync
+
+			pan_and_zoom_delay: 50,		// when panning or zooming, how ofter to update the chart
+
+			sync_pan_and_zoom: true,	// enable or disable pan and zoom sync
+
+			pan_and_zoom_data_padding: true, // fetch more data for the master chart when panning or zooming
+
+			update_only_visible: true,	// enable or disable visibility management
+
+			parallel_refresher: true,	// enable parallel refresh of charts
+
+			concurrent_refreshes: true,	// when parallel_refresher is enabled, sync also the charts
+
+			destroy_on_hide: false,		// destroy charts when they are not visible
+
+			eliminate_zero_dimensions: true, // do not show dimensions with just zeros
+
+			stop_updates_when_focus_is_lost: true, // boolean - shall we stop auto-refreshes when document does not have user focus
+			stop_updates_while_resizing: 1000,	// ms - time to stop auto-refreshes while resizing the charts
+
+			double_click_speed: 500,	// ms - time between clicks / taps to detect double click/tap
+
+ 			smooth_plot: true,			// enable smooth plot, where possible
+
+			charts_selection_animation_delay: 50, // delay to animate charts when syncing selection
+
+ 			color_fill_opacity_line: 1.0,
+ 			color_fill_opacity_area: 0.2,
+			color_fill_opacity_stacked: 0.8,
+
+			setOptionCallback: function() { ; }
+		},
+
+		debug: {
+			show_boxes: 		false,
+			main_loop: 			false,
+			focus: 				false,
+			visibility: 		false,
+			chart_data_url: 	false,
+			chart_errors: 		false, // FIXME
+			chart_timing: 		false,
+			chart_calls: 		false,
+			libraries: 			false,
+			dygraph: 			false
+		}
+	}
+
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// local storage options
+
+	NETDATA.localStorage = {
+		default: {},
+		current: {},
+		callback: {} // only used for resetting back to defaults
+	};
+
+	NETDATA.localStorageGet = function(key, def, callback) {
+		var ret = def;
+
+		if(typeof NETDATA.localStorage.default[key.toString()] === 'undefined') {
+			NETDATA.localStorage.default[key.toString()] = def;
+			NETDATA.localStorage.callback[key.toString()] = callback;
+		}
+
+		if(typeof Storage !== "undefined" && typeof localStorage === 'object') {
+			try {
+				// console.log('localStorage: loading "' + key.toString() + '"');
+				ret = localStorage.getItem(key.toString());
+				if(ret === null || ret === 'undefined') {
+					// console.log('localStorage: cannot load it, saving "' + key.toString() + '" with value "' + JSON.stringify(def) + '"');
+					localStorage.setItem(key.toString(), JSON.stringify(def));
+					ret = def;
+				}
+				else {
+					// console.log('localStorage: got "' + key.toString() + '" with value "' + ret + '"');
+					ret = JSON.parse(ret);
+					// console.log('localStorage: loaded "' + key.toString() + '" as value ' + ret + ' of type ' + typeof(ret));
+				}
+			}
+			catch(error) {
+				console.log('localStorage: failed to read "' + key.toString() + '", using default: "' + def.toString() + '"');
+				ret = def;
+			}
+		}
+
+		if(typeof ret === 'undefined' || ret === 'undefined') {
+			console.log('localStorage: LOADED UNDEFINED "' + key.toString() + '" as value ' + ret + ' of type ' + typeof(ret));
+			ret = def;
+		}
+
+		NETDATA.localStorage.current[key.toString()] = ret;
+		return ret;
+	}
+
+	NETDATA.localStorageSet = function(key, value, callback) {
+		if(typeof value === 'undefined' || value === 'undefined') {
+			console.log('localStorage: ATTEMPT TO SET UNDEFINED "' + key.toString() + '" as value ' + value + ' of type ' + typeof(value));
+		}
+
+		if(typeof NETDATA.localStorage.default[key.toString()] === 'undefined') {
+			NETDATA.localStorage.default[key.toString()] = value;
+			NETDATA.localStorage.current[key.toString()] = value;
+			NETDATA.localStorage.callback[key.toString()] = callback;
+		}
+
+		if(typeof Storage !== "undefined" && typeof localStorage === 'object') {
+			// console.log('localStorage: saving "' + key.toString() + '" with value "' + JSON.stringify(value) + '"');
+			try {
+				localStorage.setItem(key.toString(), JSON.stringify(value));
+			}
+			catch(e) {
+				console.log('localStorage: failed to save "' + key.toString() + '" with value: "' + value.toString() + '"');
+			}
+		}
+
+		NETDATA.localStorage.current[key.toString()] = value;
+		return value;
+	}
+
+	NETDATA.localStorageGetRecursive = function(obj, prefix, callback) {
+		for(var i in obj) {
+			if(typeof obj[i] === 'object') {
+				//console.log('object ' + prefix + '.' + i.toString());
+				NETDATA.localStorageGetRecursive(obj[i], prefix + '.' + i.toString(), callback);
+				continue;
+			}
+
+			obj[i] = NETDATA.localStorageGet(prefix + '.' + i.toString(), obj[i], callback);
+		}
+	}
+
+	NETDATA.setOption = function(key, value) {
+		if(key.toString() === 'setOptionCallback') {
+			if(typeof NETDATA.options.current.setOptionCallback === 'function') {
+				NETDATA.options.current[key.toString()] = value;
+				NETDATA.options.current.setOptionCallback();
+			}
+		}
+		else if(NETDATA.options.current[key.toString()] !== value) {
+			var name = 'options.' + key.toString();
+
+			if(typeof NETDATA.localStorage.default[name.toString()] === 'undefined')
+				console.log('localStorage: setOption() on unsaved option: "' + name.toString() + '", value: ' + value);
+
+			//console.log(NETDATA.localStorage);
+			//console.log('setOption: setting "' + key.toString() + '" to "' + value + '" of type ' + typeof(value) + ' original type ' + typeof(NETDATA.options.current[key.toString()]));
+			//console.log(NETDATA.options);
+			NETDATA.options.current[key.toString()] = NETDATA.localStorageSet(name.toString(), value, null);
+
+			if(typeof NETDATA.options.current.setOptionCallback === 'function')
+				NETDATA.options.current.setOptionCallback();
+		}
+
+		return true;
+	}
+
+	NETDATA.getOption = function(key) {
+		return NETDATA.options.current[key.toString()];
+	}
+
+	// read settings from local storage
+	NETDATA.localStorageGetRecursive(NETDATA.options.current, 'options', null);
+
+	// always start with this option enabled.
+	NETDATA.setOption('stop_updates_when_focus_is_lost', true);
+
+	NETDATA.resetOptions = function() {
+		for(var i in NETDATA.localStorage.default) {
+			var a = i.split('.');
+
+			if(a[0] === 'options') {
+				if(a[1] === 'setOptionCallback') continue;
+				if(typeof NETDATA.localStorage.default[i] === 'undefined') continue;
+				if(NETDATA.options.current[i] === NETDATA.localStorage.default[i]) continue;
+
+				NETDATA.setOption(a[1], NETDATA.localStorage.default[i]);
+			}
+			else if(a[0] === 'chart_heights') {
+				if(typeof NETDATA.localStorage.callback[i] === 'function' && typeof NETDATA.localStorage.default[i] !== 'undefined') {
+					NETDATA.localStorage.callback[i](NETDATA.localStorage.default[i]);
+				}
+			}
+		}
+	}
+
+	// ----------------------------------------------------------------------------------------------------------------
+
+	if(NETDATA.options.debug.main_loop === true)
+		console.log('welcome to NETDATA');
+
+	NETDATA.onresize = function() {
+		NETDATA.options.last_resized = new Date().getTime();
+		NETDATA.onscroll();
+	};
+
+	NETDATA.onscroll = function() {
+		// console.log('onscroll');
+
+		NETDATA.options.last_page_scroll = new Date().getTime();
+		if(NETDATA.options.targets === null) return;
+
+		// when the user scrolls he sees that we have
+		// hidden all the not-visible charts
+		// using this little function we try to switch
+		// the charts back to visible quickly
+		var targets = NETDATA.options.targets;
+		var len = targets.length;
+		while(len--) targets[len].isVisible();
+	};
+
+	window.onresize = NETDATA.onresize;
+	window.onscroll = NETDATA.onscroll;
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// Error Handling
+
+	NETDATA.errorCodes = {
+		100: { message: "Cannot load chart library", alert: true },
+		101: { message: "Cannot load jQuery", alert: true },
+		402: { message: "Chart library not found", alert: false },
+		403: { message: "Chart library not enabled/is failed", alert: false },
+		404: { message: "Chart not found", alert: false }
+	};
+	NETDATA.errorLast = {
+		code: 0,
+		message: "",
+		datetime: 0
+	};
+
+	NETDATA.error = function(code, msg) {
+		NETDATA.errorLast.code = code;
+		NETDATA.errorLast.message = msg;
+		NETDATA.errorLast.datetime = new Date().getTime();
+
+		console.log("ERROR " + code + ": " + NETDATA.errorCodes[code].message + ": " + msg);
+
+		if(NETDATA.errorCodes[code].alert)
+			alert("ERROR " + code + ": " + NETDATA.errorCodes[code].message + ": " + msg);
+	}
+
+	NETDATA.errorReset = function() {
+		NETDATA.errorLast.code = 0;
+		NETDATA.errorLast.message = "You are doing fine!";
+		NETDATA.errorLast.datetime = 0;
+	};
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// Chart Registry
+
+	// When multiple charts need the same chart, we avoid downloading it
+	// multiple times (and having it in browser memory multiple time)
+	// by using this registry.
+
+	// Every time we download a chart definition, we save it here with .add()
+	// Then we try to get it back with .get(). If that fails, we download it.
+
+	NETDATA.chartRegistry = {
+		charts: {},
+
+		fixid: function(id) {
+			return id.replace(/:/g, "_").replace(/\//g, "_");
+		},
+
+		add: function(host, id, data) {
+			host = this.fixid(host);
+			id   = this.fixid(id);
+
+			if(typeof this.charts[host] === 'undefined')
+				this.charts[host] = {};
+
+			//console.log('added ' + host + '/' + id);
+			this.charts[host][id] = data;
+		},
+
+		get: function(host, id) {
+			host = this.fixid(host);
+			id   = this.fixid(id);
+
+			if(typeof this.charts[host] === 'undefined')
+				return null;
+
+			if(typeof this.charts[host][id] === 'undefined')
+				return null;
+
+			//console.log('cached ' + host + '/' + id);
+			return this.charts[host][id];
+		},
+
+		downloadAll: function(host, callback) {
+			while(host.slice(-1) === '/')
+				host = host.substring(0, host.length - 1);
+
+			var self = this;
+
+			$.ajax({
+				url: host + '/api/v1/charts',
+				crossDomain: NETDATA.options.crossDomainAjax,
+				async: true,
+				cache: false
+			})
+			.done(function(data) {
+				var h = NETDATA.chartRegistry.fixid(host);
+				//console.log('downloaded all charts from ' + host + ' (' + h + ')');
+				self.charts[h] = data.charts;
+				if(typeof callback === 'function')
+					callback(data);
+			})
+			.fail(function() {
+				if(typeof callback === 'function')
+					callback(null);
+			});
+		}
+	};
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// Global Pan and Zoom on charts
+
+	// Using this structure are synchronize all the charts, so that
+	// when you pan or zoom one, all others are automatically refreshed
+	// to the same timespan.
+
+	NETDATA.globalPanAndZoom = {
+		seq: 0,					// timestamp ms
+								// every time a chart is panned or zoomed
+								// we set the timestamp here
+								// then we use it as a sequence number
+								// to find if other charts are syncronized
+								// to this timerange
+
+		master: null,			// the master chart (state), to which all others
+								// are synchronized
+
+		force_before_ms: null,	// the timespan to sync all other charts 
+		force_after_ms: null,
+
+		// set a new master
+		setMaster: function(state, after, before) {
+			if(NETDATA.options.current.sync_pan_and_zoom === false)
+				return;
+
+			if(this.master !== null && this.master !== state)
+				this.master.resetChart(true, true);
+
+			var now = new Date().getTime();
+			this.master = state;
+			this.seq = now;
+			this.force_after_ms = after;
+			this.force_before_ms = before;
+			NETDATA.options.auto_refresher_stop_until = now + NETDATA.options.current.global_pan_sync_time;
+		},
+
+		// clear the master
+		clearMaster: function() {
+			if(this.master !== null) {
+				var st = this.master;
+				this.master = null;
+				st.resetChart();
+			}
+
+			this.master = null;
+			this.seq = 0;
+			this.force_after_ms = null;
+			this.force_before_ms = null;
+			NETDATA.options.auto_refresher_stop_until = 0;
+		},
+
+		// is the given state the master of the global
+		// pan and zoom sync?
+		isMaster: function(state) {
+			if(this.master === state) return true;
+			return false;
+		},
+
+		// are we currently have a global pan and zoom sync?
+		isActive: function() {
+			if(this.master !== null && this.force_before_ms !== null && this.force_after_ms !== null && this.seq !== 0) return true;
+			return false;
+		},
+
+		// check if a chart, other than the master
+		// needs to be refreshed, due to the global pan and zoom
+		shouldBeAutoRefreshed: function(state) {
+			if(this.master === null || this.seq === 0)
+				return false;
+
+			//if(state.needsRecreation())
+			//	return true;
+
+			if(state.tm.pan_and_zoom_seq === this.seq)
+				return false;
+
+			return true;
+		}
+	}
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// dimensions selection
+
+	// FIXME
+	// move color assignment to dimensions, here
+
+	dimensionStatus = function(parent, label, name_div, value_div, color) {
+		this.enabled = false;
+		this.parent = parent;
+		this.label = label;
+		this.name_div = null;
+		this.value_div = null;
+		this.color = NETDATA.themes.current.foreground;
+
+		if(parent.selected === parent.unselected)
+			this.selected = true;
+		else
+			this.selected = false;
+
+		this.setOptions(name_div, value_div, color);
+	}
+
+	dimensionStatus.prototype.invalidate = function() {
+		this.name_div = null;
+		this.value_div = null;
+		this.enabled = false;
+	}
+
+	dimensionStatus.prototype.setOptions = function(name_div, value_div, color) {
+		this.color = color;
+
+		if(this.name_div != name_div) {
+			this.name_div = name_div;
+			this.name_div.title = this.label;
+			this.name_div.style.color = this.color;
+			if(this.selected === false)
+				this.name_div.className = 'netdata-legend-name not-selected';
+			else
+				this.name_div.className = 'netdata-legend-name selected';
+		}
+
+		if(this.value_div != value_div) {
+			this.value_div = value_div;
+			this.value_div.title = this.label;
+			this.value_div.style.color = this.color;
+			if(this.selected === false)
+				this.value_div.className = 'netdata-legend-value not-selected';
+			else
+				this.value_div.className = 'netdata-legend-value selected';
+		}
+
+		this.enabled = true;
+		this.setHandler();
+	}
+
+	dimensionStatus.prototype.setHandler = function() {
+		if(this.enabled === false) return;
+
+		var ds = this;
+
+		// this.name_div.onmousedown = this.value_div.onmousedown = function(e) {
+		this.name_div.onclick = this.value_div.onclick = function(e) {
+			e.preventDefault();
+			if(ds.isSelected()) {
+				// this is selected
+				if(e.shiftKey === true || e.ctrlKey === true) {
+					// control or shift key is pressed -> unselect this (except is none will remain selected, in which case select all)
+					ds.unselect();
+
+					if(ds.parent.countSelected() === 0)
+						ds.parent.selectAll();
+				}
+				else {
+					// no key is pressed -> select only this (except if it is the only selected already, in which case select all)
+					if(ds.parent.countSelected() === 1) {
+						ds.parent.selectAll();
+					}
+					else {
+						ds.parent.selectNone();
+						ds.select();
+					}
+				}
+			}
+			else {
+				// this is not selected
+				if(e.shiftKey === true || e.ctrlKey === true) {
+					// control or shift key is pressed -> select this too
+					ds.select();
+				}
+				else {
+					// no key is pressed -> select only this
+					ds.parent.selectNone();
+					ds.select();
+				}
+			}
+
+			ds.parent.state.redrawChart();
+		}
+	}
+
+	dimensionStatus.prototype.select = function() {
+		if(this.enabled === false) return;
+
+		this.name_div.className = 'netdata-legend-name selected';
+		this.value_div.className = 'netdata-legend-value selected';
+		this.selected = true;
+	}
+
+	dimensionStatus.prototype.unselect = function() {
+		if(this.enabled === false) return;
+
+		this.name_div.className = 'netdata-legend-name not-selected';
+		this.value_div.className = 'netdata-legend-value hidden';
+		this.selected = false;
+	}
+
+	dimensionStatus.prototype.isSelected = function() {
+		return(this.enabled === true && this.selected === true);
+	}
+
+	// ----------------------------------------------------------------------------------------------------------------
+
+	dimensionsVisibility = function(state) {
+		this.state = state;
+		this.len = 0;
+		this.dimensions = {};
+		this.selected_count = 0;
+		this.unselected_count = 0;
+	}
+
+	dimensionsVisibility.prototype.dimensionAdd = function(label, name_div, value_div, color) {
+		if(typeof this.dimensions[label] === 'undefined') {
+			this.len++;
+			this.dimensions[label] = new dimensionStatus(this, label, name_div, value_div, color);
+		}
+		else
+			this.dimensions[label].setOptions(name_div, value_div, color);
+
+		return this.dimensions[label];
+	}
+
+	dimensionsVisibility.prototype.dimensionGet = function(label) {
+		return this.dimensions[label];
+	}
+
+	dimensionsVisibility.prototype.invalidateAll = function() {
+		for(var d in this.dimensions)
+			this.dimensions[d].invalidate();
+	}
+
+	dimensionsVisibility.prototype.selectAll = function() {
+		for(var d in this.dimensions)
+			this.dimensions[d].select();
+	}
+
+	dimensionsVisibility.prototype.countSelected = function() {
+		var i = 0;
+		for(var d in this.dimensions)
+			if(this.dimensions[d].isSelected()) i++;
+
+		return i;
+	}
+
+	dimensionsVisibility.prototype.selectNone = function() {
+		for(var d in this.dimensions)
+			this.dimensions[d].unselect();
+	}
+
+	dimensionsVisibility.prototype.selected2BooleanArray = function(array) {
+		var ret = new Array();
+		this.selected_count = 0;
+		this.unselected_count = 0;
+
+		for(var i = 0, len = array.length; i < len ; i++) {
+			var ds = this.dimensions[array[i]];
+			if(typeof ds === 'undefined') {
+				// console.log(array[i] + ' is not found');
+				ret.push(false);
+				continue;
+			}
+
+			if(ds.isSelected()) {
+				ret.push(true);
+				this.selected_count++;
+			}
+			else {
+				ret.push(false);
+				this.unselected_count++;
+			}
+		}
+
+		if(this.selected_count === 0 && this.unselected_count !== 0) {
+			this.selectAll();
+			return this.selected2BooleanArray(array);
+		}
+
+		return ret;
+	}
+
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// global selection sync
+
+	NETDATA.globalSelectionSync = {
+		state: null,
+		dont_sync_before: 0,
+		last_t: 0,
+		slaves: [],
+
+		stop: function() {
+			if(this.state !== null)
+				this.state.globalSelectionSyncStop();
+		},
+
+		delay: function() {
+			if(this.state !== null) {
+				this.state.globalSelectionSyncDelay();
+			}
+		}
+	};
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// Our state object, where all per-chart values are stored
+
+	chartState = function(element) {
+		var self = $(element);
+		this.element = element;
+
+		// IMPORTANT:
+		// all private functions should use 'that', instead of 'this'
+		var that = this;
+
+		/* error() - private
+		 * show an error instead of the chart
+		 */
+		var error = function(msg) {
+			that.element.innerHTML = that.id + ': ' + msg;
+			that.enabled = false;
+			that.current = that.pan;
+		}
+
+		// GUID - a unique identifier for the chart
+		this.uuid = NETDATA.guid();
+
+		// string - the name of chart
+		this.id = self.data('netdata');
+
+		// string - the key for localStorage settings
+		this.settings_id = self.data('id') || null;
+
+		// the user given dimensions of the element
+		this.width = self.data('width') || NETDATA.chartDefaults.width;
+		this.height = self.data('height') || NETDATA.chartDefaults.height;
+
+		if(this.settings_id !== null) {
+			this.height = NETDATA.localStorageGet('chart_heights.' + this.settings_id, this.height, function(height) {
+				// this is the callback that will be called
+				// if and when the user resets all localStorage variables
+				// to their defaults
+
+				resizeChartToHeight(height);
+			});
+		}
+
+		// string - the netdata server URL, without any path
+		this.host = self.data('host') || NETDATA.chartDefaults.host;
+
+		// make sure the host does not end with /
+		// all netdata API requests use absolute paths
+		while(this.host.slice(-1) === '/')
+			this.host = this.host.substring(0, this.host.length - 1);
+
+		// string - the grouping method requested by the user
+		this.method = self.data('method') || NETDATA.chartDefaults.method;
+
+		// the time-range requested by the user
+		this.after = self.data('after') || NETDATA.chartDefaults.after;
+		this.before = self.data('before') || NETDATA.chartDefaults.before;
+
+		// the pixels per point requested by the user
+		this.pixels_per_point = self.data('pixels-per-point') || 1;
+		this.points = self.data('points') || null;
+
+		// the dimensions requested by the user
+		this.dimensions = self.data('dimensions') || null;
+
+		// the chart library requested by the user
+		this.library_name = self.data('chart-library') || NETDATA.chartDefaults.library;
+
+		// object - the chart library used
+		this.library = null;
+
+		// color management
+		this.colors = null;
+		this.colors_assigned = {};
+		this.colors_available = null;
+
+		// the element already created by the user
+		this.element_message = null;
+
+		// the element with the chart
+		this.element_chart = null;
+
+		// the element with the legend of the chart (if created by us)
+		this.element_legend = null;
+		this.element_legend_childs = {
+			hidden: null,
+			title_date: null,
+			title_time: null,
+			title_units: null,
+			nano: null,
+			nano_options: null,
+			series: null
+		};
+
+		this.chart_url = null;						// string - the url to download chart info
+		this.chart = null;							// object - the chart as downloaded from the server
+
+		this.title = self.data('title') || null;	// the title of the chart
+		this.units = self.data('units') || null;	// the units of the chart dimensions
+		this.append_options = self.data('append-options') || null;	// the units of the chart dimensions
+
+		this.validated = false; 					// boolean - has the chart been validated?
+		this.enabled = true; 						// boolean - is the chart enabled for refresh?
+		this.paused = false;						// boolean - is the chart paused for any reason?
+		this.selected = false;						// boolean - is the chart shown a selection?
+		this.debug = false;							// boolean - console.log() debug info about this chart
+
+		this.netdata_first = 0;						// milliseconds - the first timestamp in netdata
+		this.netdata_last = 0;						// milliseconds - the last timestamp in netdata
+		this.requested_after = null;				// milliseconds - the timestamp of the request after param
+		this.requested_before = null;				// milliseconds - the timestamp of the request before param
+		this.requested_padding = null;
+		this.view_after = 0;
+		this.view_before = 0;
+
+		this.auto = {
+			name: 'auto',
+			autorefresh: true,
+			force_update_at: 0, // the timestamp to force the update at
+			force_before_ms: null,
+			force_after_ms: null
+		};
+		this.pan = {
+			name: 'pan',
+			autorefresh: false,
+			force_update_at: 0, // the timestamp to force the update at
+			force_before_ms: null,
+			force_after_ms: null
+		};
+		this.zoom = {
+			name: 'zoom',
+			autorefresh: false,
+			force_update_at: 0, // the timestamp to force the update at
+			force_before_ms: null,
+			force_after_ms: null
+		};
+
+		// this is a pointer to one of the sub-classes below
+		// auto, pan, zoom
+		this.current = this.auto;
+
+		// check the requested library is available
+		// we don't initialize it here - it will be initialized when
+		// this chart will be first used
+		if(typeof NETDATA.chartLibraries[that.library_name] === 'undefined') {
+			NETDATA.error(402, that.library_name);
+			error('chart library "' + that.library_name + '" is not found');
+			return;
+		}
+		else if(NETDATA.chartLibraries[that.library_name].enabled === false) {
+			NETDATA.error(403, that.library_name);
+			error('chart library "' + that.library_name + '" is not enabled');
+			return;
+		}
+		else
+			that.library = NETDATA.chartLibraries[that.library_name];
+
+		// milliseconds - the time the last refresh took
+		this.refresh_dt_ms = 0;
+
+		// if we need to report the rendering speed
+		// find the element that needs to be updated
+		var refresh_dt_element_name = self.data('dt-element-name') || null;	// string - the element to print refresh_dt_ms
+
+		if(refresh_dt_element_name !== null)
+			this.refresh_dt_element = document.getElementById(refresh_dt_element_name) || null;
+		else
+			this.refresh_dt_element = null;
+
+		this.dimensions_visibility = new dimensionsVisibility(this);
+
+		this._updating = false;
+
+		// ============================================================================================================
+		// PRIVATE FUNCTIONS
+
+		var createDOM = function() {
+			if(that.enabled === false) return;
+
+			if(that.element_message !== null) that.element_message.innerHTML = '';
+			if(that.element_legend !== null) that.element_legend.innerHTML = '';
+			if(that.element_chart !== null) that.element_chart.innerHTML = '';
+
+			that.element.innerHTML = '';
+
+			that.element_message = document.createElement('div');
+			that.element_message.className = ' netdata-message hidden';
+			that.element.appendChild(that.element_message);
+
+			that.element_chart = document.createElement('div');
+			that.element_chart.id = that.library_name + '-' + that.uuid + '-chart';
+			that.element.appendChild(that.element_chart);
+
+			if(that.hasLegend() === true) {
+				that.element.className = "netdata-container-with-legend";
+				that.element_chart.className = 'netdata-chart-with-legend-right netdata-' + that.library_name + '-chart-with-legend-right';
+
+				that.element_legend = document.createElement('div');
+				that.element_legend.className = 'netdata-chart-legend netdata-' + that.library_name + '-legend';
+				that.element.appendChild(that.element_legend);
+			}
+			else {
+				that.element.className = "netdata-container";
+				that.element_chart.className = ' netdata-chart netdata-' + that.library_name + '-chart';
+
+				that.element_legend = null;
+			}
+			that.element_legend_childs.series = null;
+
+			if(typeof(that.width) === 'string')
+				$(that.element).css('width', that.width);
+			else if(typeof(that.width) === 'number')
+				$(that.element).css('width', that.width + 'px');
+
+			if(typeof(that.library.aspect_ratio) === 'undefined') {
+				if(typeof(that.height) === 'string')
+					$(that.element).css('height', that.height);
+				else if(typeof(that.height) === 'number')
+					$(that.element).css('height', that.height + 'px');
+			}
+			else {
+				var w = that.element.offsetWidth;
+				if(w === null || w === 0) {
+					// the div is hidden
+					// this is resize the chart when next viewed
+					that.tm.last_resized = 0;
+				}
+				else
+					$(that.element).css('height', (that.element.offsetWidth * that.library.aspect_ratio / 100).toString() + 'px');
+			}
+
+			if(NETDATA.chartDefaults.min_width !== null)
+				$(that.element).css('min-width', NETDATA.chartDefaults.min_width);
+
+			that.tm.last_dom_created = new Date().getTime();
+
+			showLoading();
+		}
+
+		/* init() private
+		 * initialize state viariables
+		 * destroy all (possibly) created state elements
+		 * create the basic DOM for a chart
+		 */
+		var init = function() {
+			if(that.enabled === false) return;
+
+			that.paused = false;
+			that.selected = false;
+
+			that.chart_created = false;			// boolean - is the library.create() been called?
+			that.updates_counter = 0;			// numeric - the number of refreshes made so far
+			that.updates_since_last_unhide = 0;	// numeric - the number of refreshes made since the last time the chart was unhidden
+			that.updates_since_last_creation = 0; // numeric - the number of refreshes made since the last time the chart was created
+
+			that.tm = {
+				last_initialized: 0,		// milliseconds - the timestamp it was last initialized
+				last_dom_created: 0,		// milliseconds - the timestamp its DOM was last created
+				last_mode_switch: 0,		// milliseconds - the timestamp it switched modes
+
+				last_info_downloaded: 0,	// milliseconds - the timestamp we downloaded the chart
+				last_updated: 0,			// the timestamp the chart last updated with data
+				pan_and_zoom_seq: 0,		// the sequence number of the global synchronization
+											// between chart.
+											// Used with NETDATA.globalPanAndZoom.seq
+				last_visible_check: 0,		// the time we last checked if it is visible
+				last_resized: 0,			// the time the chart was resized
+				last_hidden: 0,				// the time the chart was hidden
+				last_unhidden: 0,			// the time the chart was unhidden
+				last_autorefreshed: 0		// the time the chart was last refreshed
+			},
+
+			that.data = null;				// the last data as downloaded from the netdata server
+			that.data_url = 'invalid://';	// string - the last url used to update the chart
+			that.data_points = 0;			// number - the number of points returned from netdata
+			that.data_after = 0;			// milliseconds - the first timestamp of the data
+			that.data_before = 0;			// milliseconds - the last timestamp of the data
+			that.data_update_every = 0;		// milliseconds - the frequency to update the data
+
+			that.tm.last_initialized = new Date().getTime();
+			createDOM();
+
+			that.setMode('auto');
+		}
+
+		var maxMessageFontSize = function() {
+			// normally we want a font size, as tall as the element
+			var h = that.element_message.clientHeight;
+
+			// but give it some air, 20% let's say, or 5 pixels min
+			var lost = Math.max(h * 0.2, 5);
+			h -= lost;
+
+			// center the text, verically
+			var paddingTop = (lost - 5) / 2;
+
+			// but check the width too
+			// it should fit 10 characters in it
+			var w = that.element_message.clientWidth / 10;
+			if(h > w) {
+				paddingTop += (h - w) / 2;
+				h = w;
+			}
+
+			// and don't make it too huge
+			// 5% of the screen size is good
+			if(h > screen.height / 20) {
+				paddingTop += (h - (screen.height / 20)) / 2;
+				h = screen.height / 20;
+			}
+
+			// set it
+			that.element_message.style.fontSize = h.toString() + 'px';
+			that.element_message.style.paddingTop = paddingTop.toString() + 'px';
+		}
+
+		var showMessage = function(msg) {
+			that.element_message.className = 'netdata-message';
+			that.element_message.innerHTML = msg;
+			this.element_message.style.fontSize = 'x-small';
+			that.element_message.style.paddingTop = '0px';
+			that.___messageHidden___ = undefined;
+		}
+
+		var showMessageIcon = function(icon) {
+			that.element_message.innerHTML = icon;
+			that.element_message.className = 'netdata-message icon';
+			maxMessageFontSize();
+			that.___messageHidden___ = undefined;
+		}
+
+		var hideMessage = function() {
+			if(typeof that.___messageHidden___ === 'undefined') {
+				that.___messageHidden___ = true;
+				that.element_message.className = 'netdata-message hidden';
+			}
+		}
+
+		var showRendering = function() {
+			var icon;
+			if(that.chart !== null) {
+				if(that.chart.chart_type === 'line')
+					icon = '<i class="fa fa-line-chart"></i>';
+				else
+					icon = '<i class="fa fa-area-chart"></i>';
+			}
+			else
+				icon = '<i class="fa fa-area-chart"></i>';
+
+			showMessageIcon(icon + ' netdata');
+		}
+
+		var showLoading = function() {
+			if(that.chart_created === false) {
+				showMessageIcon('<i class="fa fa-refresh"></i> netdata');
+				return true;
+			}
+			return false;
+		}
+
+		var isHidden = function() {
+			if(typeof that.___chartIsHidden___ !== 'undefined')
+				return true;
+
+			return false;
+		}
+
+		// hide the chart, when it is not visible - called from isVisible()
+		var hideChart = function() {
+			// hide it, if it is not already hidden
+			if(isHidden() === true) return;
+
+			if(that.chart_created === true) {
+				// we should destroy it
+				if(NETDATA.options.current.destroy_on_hide === true) {
+					init();
+				}
+				else {
+					showRendering();
+					that.element_chart.style.display = 'none';
+					if(that.element_legend !== null) that.element_legend.style.display = 'none';
+					that.tm.last_hidden = new Date().getTime();
+				}
+			}
+			
+			that.___chartIsHidden___ = true;
+		}
+
+		// unhide the chart, when it is visible - called from isVisible()
+		var unhideChart = function() {
+			if(isHidden() === false) return;
+
+			that.___chartIsHidden___ = undefined;
+			that.updates_since_last_unhide = 0;
+
+			if(that.chart_created === false) {
+				// we need to re-initialize it, to show our background
+				// logo in bootstrap tabs, until the chart loads
+				init();
+			}
+			else {
+				that.tm.last_unhidden = new Date().getTime();
+				that.element_chart.style.display = '';
+				if(that.element_legend !== null) that.element_legend.style.display = '';
+				resizeChart();
+				hideMessage();
+			}
+		}
+
+		var canBeRendered = function() {
+			if(isHidden() === true || that.isVisible(true) === false)
+				return false;
+
+			return true;
+		}
+
+		// https://github.com/petkaantonov/bluebird/wiki/Optimization-killers
+		var callChartLibraryUpdateSafely = function(data) {
+			var status;
+
+			if(canBeRendered() === false)
+				return false;
+
+			if(NETDATA.options.debug.chart_errors === true)
+				status = that.library.update(that, data);
+			else {
+				try {
+					status = that.library.update(that, data);
+				}
+				catch(err) {
+					status = false;
+				}
+			}
+
+			if(status === false) {
+				error('chart failed to be updated as ' + that.library_name);
+				return false;
+			}
+
+			return true;
+		}
+
+		// https://github.com/petkaantonov/bluebird/wiki/Optimization-killers
+		var callChartLibraryCreateSafely = function(data) {
+			var status;
+
+			if(canBeRendered() === false)
+				return false;
+
+			if(NETDATA.options.debug.chart_errors === true)
+				status = that.library.create(that, data);
+			else {
+				try {
+					status = that.library.create(that, data);
+				}
+				catch(err) {
+					status = false;
+				}
+			}
+
+			if(status === false) {
+				error('chart failed to be created as ' + that.library_name);
+				return false;
+			}
+
+			that.chart_created = true;
+			that.updates_since_last_creation = 0;
+			return true;
+		}
+
+		// ----------------------------------------------------------------------------------------------------------------
+		// Chart Resize
+
+		// resizeChart() - private
+		// to be called just before the chart library to make sure that
+		// a properly sized dom is available
+		var resizeChart = function() {
+			if(that.isVisible() === true && that.tm.last_resized < NETDATA.options.last_resized) {
+				if(that.chart_created === false) return;
+
+				if(that.needsRecreation()) {
+					init();
+				}
+				else if(typeof that.library.resize === 'function') {
+					that.library.resize(that);
+
+					if(that.element_legend_childs.nano !== null && that.element_legend_childs.nano_options !== null)
+						$(that.element_legend_childs.nano).nanoScroller();
+
+					maxMessageFontSize();
+				}
+
+				that.tm.last_resized = new Date().getTime();
+			}
+		}
+
+		// this is the actual chart resize algorithm
+		// it will:
+		// - resize the entire container
+		// - update the internal states
+		// - resize the chart as the div changes height
+		// - update the scrollbar of the legend
+		var resizeChartToHeight = function(h) {
+			// console.log(h);
+			that.element.style.height = h;
+
+			if(that.settings_id !== null)
+				NETDATA.localStorageSet('chart_heights.' + that.settings_id, h);
+
+			var now = new Date().getTime();
+			NETDATA.options.last_page_scroll = now;
+			NETDATA.options.auto_refresher_stop_until = now + NETDATA.options.current.stop_updates_while_resizing;
+
+			// force a resize
+			that.tm.last_resized = 0;
+			resizeChart();
+		};
+
+		this.resizeHandler = function(e) {
+			e.preventDefault();
+
+			if(typeof this.event_resize === 'undefined'
+				|| this.event_resize.chart_original_w === 'undefined'
+				|| this.event_resize.chart_original_h === 'undefined')
+				this.event_resize = {
+					chart_original_w: this.element.clientWidth,
+					chart_original_h: this.element.clientHeight,
+					last: 0
+				};
+
+			if(e.type === 'touchstart') {
+				this.event_resize.mouse_start_x = e.touches.item(0).pageX;
+				this.event_resize.mouse_start_y = e.touches.item(0).pageY;
+			}
+			else {
+				this.event_resize.mouse_start_x = e.clientX;
+				this.event_resize.mouse_start_y = e.clientY;
+			}
+
+			this.event_resize.chart_start_w = this.element.clientWidth;
+			this.event_resize.chart_start_h = this.element.clientHeight;
+			this.event_resize.chart_last_w = this.element.clientWidth;
+			this.event_resize.chart_last_h = this.element.clientHeight;
+
+			var now = new Date().getTime();
+			if(now - this.event_resize.last <= NETDATA.options.current.double_click_speed) {
+				// double click / double tap event
+
+				// the optimal height of the chart
+				// showing the entire legend
+				var optimal = this.event_resize.chart_last_h
+						+ this.element_legend_childs.content.scrollHeight
+						- this.element_legend_childs.content.clientHeight;
+
+				// if we are not optimal, be optimal
+				if(this.event_resize.chart_last_h != optimal)
+					resizeChartToHeight(optimal.toString() + 'px');
+
+				// else if we do not have the original height
+				// reset to the original height
+				else if(this.event_resize.chart_last_h != this.event_resize.chart_original_h)
+					resizeChartToHeight(this.event_resize.chart_original_h.toString() + 'px');
+			}
+			else {
+				this.event_resize.last = now;
+
+				// process movement event
+				document.onmousemove =
+				document.ontouchmove =
+				this.element_legend_childs.resize_handler.onmousemove =
+				this.element_legend_childs.resize_handler.ontouchmove =
+					function(e) {
+						var y = null;
+
+						switch(e.type) {
+							case 'mousemove': y = e.clientY; break;
+							case 'touchmove': y = e.touches.item(e.touches - 1).pageY; break;
+						}
+
+						if(y !== null) {
+							var	newH = that.event_resize.chart_start_h + y - that.event_resize.mouse_start_y;
+
+							if(newH >= 70 && newH !== that.event_resize.chart_last_h) {
+								resizeChartToHeight(newH.toString() + 'px');
+								that.event_resize.chart_last_h = newH;
+							}
+						}
+					};
+
+				// process end event
+				document.onmouseup = 
+				document.ontouchend = 
+				this.element_legend_childs.resize_handler.onmouseup =
+				this.element_legend_childs.resize_handler.ontouchend =
+					function(e) {
+						// remove all the hooks
+						document.onmouseup =
+						document.onmousemove =
+						document.ontouchmove =
+						document.ontouchend =
+						that.element_legend_childs.resize_handler.onmousemove =
+						that.element_legend_childs.resize_handler.ontouchmove =
+						that.element_legend_childs.resize_handler.onmouseout =
+						that.element_legend_childs.resize_handler.onmouseup =
+						that.element_legend_childs.resize_handler.ontouchend =
+							null;
+
+						// allow auto-refreshes
+						NETDATA.options.auto_refresher_stop_until = 0;
+					};
+			}
+		}
+
+
+		var noDataToShow = function() {
+			showMessageIcon('<i class="fa fa-warning"></i> empty');
+			that.legendUpdateDOM();
+			that.tm.last_autorefreshed = new Date().getTime();
+			// that.data_update_every = 30 * 1000;
+			//that.element_chart.style.display = 'none';
+			//if(that.element_legend !== null) that.element_legend.style.display = 'none';
+			//that.___chartIsHidden___ = true;
+		}
+
+		// ============================================================================================================
+		// PUBLIC FUNCTIONS
+
+		this.error = function(msg) {
+			error(msg);
+		}
+
+		this.setMode = function(m) {
+			if(this.current !== null && this.current.name === m) return;
+
+			if(m === 'auto')
+				this.current = this.auto;
+			else if(m === 'pan')
+				this.current = this.pan;
+			else if(m === 'zoom')
+				this.current = this.zoom;
+			else
+				this.current = this.auto;
+
+			this.current.force_update_at = 0;
+			this.current.force_before_ms = null;
+			this.current.force_after_ms = null;
+
+			this.tm.last_mode_switch = new Date().getTime();
+		}
+
+		// ----------------------------------------------------------------------------------------------------------------
+		// global selection sync
+
+		// prevent to global selection sync for some time
+		this.globalSelectionSyncDelay = function(ms) {
+			if(NETDATA.options.current.sync_selection === false)
+				return;
+
+			if(typeof ms === 'number')
+				NETDATA.globalSelectionSync.dont_sync_before = new Date().getTime() + ms;
+			else
+				NETDATA.globalSelectionSync.dont_sync_before = new Date().getTime() + NETDATA.options.current.sync_selection_delay;
+		}
+
+		// can we globally apply selection sync?
+		this.globalSelectionSyncAbility = function() {
+			if(NETDATA.options.current.sync_selection === false)
+				return false;
+
+			if(NETDATA.globalSelectionSync.dont_sync_before > new Date().getTime())
+				return false;
+
+			return true;
+		}
+
+		this.globalSelectionSyncIsMaster = function() {
+			if(NETDATA.globalSelectionSync.state === this)
+				return true;
+			else
+				return false;
+		}
+
+		// this chart is the master of the global selection sync
+		this.globalSelectionSyncBeMaster = function() {
+			// am I the master?
+			if(this.globalSelectionSyncIsMaster()) {
+				if(this.debug === true)
+					this.log('sync: I am the master already.');
+
+				return;
+			}
+
+			if(NETDATA.globalSelectionSync.state) {
+				if(this.debug === true)
+					this.log('sync: I am not the sync master. Resetting global sync.');
+
+				this.globalSelectionSyncStop();
+			}
+
+			// become the master
+			if(this.debug === true)
+				this.log('sync: becoming sync master.');
+
+			this.selected = true;
+			NETDATA.globalSelectionSync.state = this;
+
+			// find the all slaves
+			var targets = NETDATA.options.targets;
+			var len = targets.length;
+			while(len--) {
+				st = targets[len];
+
+				if(st === this) {
+					if(this.debug === true)
+						st.log('sync: not adding me to sync');
+				}
+				else if(st.globalSelectionSyncIsEligible()) {
+					if(this.debug === true)
+						st.log('sync: adding to sync as slave');
+
+					st.globalSelectionSyncBeSlave();
+				}
+			}
+
+			// this.globalSelectionSyncDelay(100);
+		}
+
+		// can the chart participate to the global selection sync as a slave?
+		this.globalSelectionSyncIsEligible = function() {
+			if(this.enabled === true
+				&& this.library !== null
+				&& typeof this.library.setSelection === 'function'
+				&& this.isVisible() === true
+				&& this.chart_created === true)
+				return true;
+
+			return false;
+		}
+
+		// this chart becomes a slave of the global selection sync
+		this.globalSelectionSyncBeSlave = function() {
+			if(NETDATA.globalSelectionSync.state !== this)
+				NETDATA.globalSelectionSync.slaves.push(this);
+		}
+
+		// sync all the visible charts to the given time
+		// this is to be called from the chart libraries
+		this.globalSelectionSync = function(t) {
+			if(this.globalSelectionSyncAbility() === false) {
+				if(this.debug === true)
+					this.log('sync: cannot sync (yet?).');
+
+				return;
+			}
+
+			if(this.globalSelectionSyncIsMaster() === false) {
+				if(this.debug === true)
+					this.log('sync: trying to be sync master.');
+
+				this.globalSelectionSyncBeMaster();
+
+				if(this.globalSelectionSyncAbility() === false) {
+					if(this.debug === true)
+						this.log('sync: cannot sync (yet?).');
+
+					return;
+				}
+			}
+
+			NETDATA.globalSelectionSync.last_t = t;
+			$.each(NETDATA.globalSelectionSync.slaves, function(i, st) {
+				st.setSelection(t);
+			});
+		}
+
+		// stop syncing all charts to the given time
+		this.globalSelectionSyncStop = function() {
+			if(NETDATA.globalSelectionSync.slaves.length) {
+				if(this.debug === true)
+					this.log('sync: cleaning up...');
+
+				$.each(NETDATA.globalSelectionSync.slaves, function(i, st) {
+					if(st === that) {
+						if(that.debug === true)
+							st.log('sync: not adding me to sync stop');
+					}
+					else {
+						if(that.debug === true)
+							st.log('sync: removed slave from sync');
+
+						st.clearSelection();
+					}
+				});
+
+				NETDATA.globalSelectionSync.last_t = 0;
+				NETDATA.globalSelectionSync.slaves = [];
+				NETDATA.globalSelectionSync.state = null;
+			}
+
+			this.clearSelection();
+		}
+
+		this.setSelection = function(t) {
+			if(typeof this.library.setSelection === 'function') {
+				if(this.library.setSelection(this, t) === true)
+					this.selected = true;
+				else
+					this.selected = false;
+			}
+			else this.selected = true;
+
+			if(this.selected === true && this.debug === true)
+				this.log('selection set to ' + t.toString());
+
+			return this.selected;
+		}
+
+		this.clearSelection = function() {
+			if(this.selected === true) {
+				if(typeof this.library.clearSelection === 'function') {
+					if(this.library.clearSelection(this) === true)
+						this.selected = false;
+					else
+						this.selected = true;
+				}
+				else this.selected = false;
+
+				if(this.selected === false && this.debug === true)
+					this.log('selection cleared');
+
+				this.legendReset();
+			}
+
+			return this.selected;
+		}
+
+		// find if a timestamp (ms) is shown in the current chart
+		this.timeIsVisible = function(t) {
+			if(t >= this.data_after && t <= this.data_before)
+				return true;
+			return false;
+		},
+
+		this.calculateRowForTime = function(t) {
+			if(this.timeIsVisible(t) === false) return -1;
+			return Math.floor((t - this.data_after) / this.data_update_every);
+		}
+
+		// ----------------------------------------------------------------------------------------------------------------
+
+		// console logging
+		this.log = function(msg) {
+			console.log(this.id + ' (' + this.library_name + ' ' + this.uuid + '): ' + msg);
+		}
+
+		this.pauseChart = function() {
+			if(this.paused === false) {
+				if(this.debug === true)
+					this.log('pauseChart()');
+
+				this.paused = true;
+			}
+		}
+
+		this.unpauseChart = function() {
+			if(this.paused === true) {
+				if(this.debug === true)
+					this.log('unpauseChart()');
+
+				this.paused = false;
+			}
+		}
+
+		this.resetChart = function(dont_clear_master, dont_update) {
+			if(this.debug === true)
+				this.log('resetChart(' + dont_clear_master + ', ' + dont_update + ') called');
+
+			if(typeof dont_clear_master === 'undefined')
+				dont_clear_master = false;
+
+			if(typeof dont_update === 'undefined')
+				dont_update = false;
+
+			if(dont_clear_master !== true && NETDATA.globalPanAndZoom.isMaster(this) === true) {
+				if(this.debug === true)
+					this.log('resetChart() diverting to clearMaster().');
+				// this will call us back with master === true
+				NETDATA.globalPanAndZoom.clearMaster();
+				return;
+			}
+
+			this.clearSelection();
+
+			this.tm.pan_and_zoom_seq = 0;
+
+			this.setMode('auto');
+			this.current.force_update_at = 0;
+			this.current.force_before_ms = null;
+			this.current.force_after_ms = null;
+			this.tm.last_autorefreshed = 0;
+			this.paused = false;
+			this.selected = false;
+			this.enabled = true;
+			// this.debug = false;
+
+			// do not update the chart here
+			// or the chart will flip-flop when it is the master
+			// of a selection sync and another chart becomes
+			// the new master
+
+			if(dont_update !== true && this.isVisible() === true) {
+				this.updateChart();
+			}
+		}
+
+		this.updateChartPanOrZoom = function(after, before) {
+			var logme = 'updateChartPanOrZoom(' + after + ', ' + before + '): ';
+			var ret = true;
+
+			if(this.debug === true)
+				this.log(logme);
+
+			if(before < after) {
+				this.log(logme + 'flipped parameters, rejecting it.');
+				return false;
+			}
+
+			if(typeof this.fixed_min_duration === 'undefined')
+				this.fixed_min_duration = Math.round((this.chartWidth() / 30) * this.chart.update_every * 1000);
+			
+			var min_duration = this.fixed_min_duration;
+			var current_duration = Math.round(this.view_before - this.view_after);
+
+			// round the numbers
+			after = Math.round(after);
+			before = Math.round(before);
+
+			// align them to update_every
+			// stretching them further away
+			after -= after % this.data_update_every;
+			before += this.data_update_every - (before % this.data_update_every);
+
+			// the final wanted duration
+			var wanted_duration = before - after;
+			
+			// to allow panning, accept just a point below our minimum
+			if((current_duration - this.data_update_every) < min_duration)
+				min_duration = current_duration - this.data_update_every;
+
+			// we do it, but we adjust to minimum size and return false
+			// when the wanted size is below the current and the minimum
+			// and we zoom
+			if(wanted_duration < current_duration && wanted_duration < min_duration) {
+				if(this.debug === true)
+					this.log(logme + 'too small: min_duration: ' + (min_duration / 1000).toString() + ', wanted: ' + (wanted_duration / 1000).toString());
+
+				min_duration = this.fixed_min_duration;
+
+				var dt = (min_duration - wanted_duration) / 2;
+				before += dt;
+				after -= dt;
+				wanted_duration = before - after;
+				ret = false;
+			}
+
+			var tolerance = this.data_update_every * 2;
+			var movement = Math.abs(before - this.view_before);
+
+			if(Math.abs(current_duration - wanted_duration) <= tolerance && movement <= tolerance && ret === true) {
+				if(this.debug === true)
+					this.log(logme + 'REJECTING UPDATE: current/min duration: ' + (current_duration / 1000).toString() + '/' + (this.fixed_min_duration / 1000).toString() + ', wanted duration: ' + (wanted_duration / 1000).toString() + ', duration diff: ' + (Math.round(Math.abs(current_duration - wanted_duration) / 1000)).toString() + ', movement: ' + (movement / 1000).toString() + ', tolerance: ' + (tolerance / 1000).toString() + ', returning: ' + false);
+				return false;
+			}
+
+			if(this.current.name === 'auto') {
+				this.log(logme + 'caller called me with mode: ' + this.current.name);
+				this.setMode('pan');
+			}
+
+			if(this.debug === true)
+				this.log(logme + 'ACCEPTING UPDATE: current/min duration: ' + (current_duration / 1000).toString() + '/' + (this.fixed_min_duration / 1000).toString() + ', wanted duration: ' + (wanted_duration / 1000).toString() + ', duration diff: ' + (Math.round(Math.abs(current_duration - wanted_duration) / 1000)).toString() + ', movement: ' + (movement / 1000).toString() + ', tolerance: ' + (tolerance / 1000).toString() + ', returning: ' + ret);
+
+			this.current.force_update_at = new Date().getTime() + NETDATA.options.current.pan_and_zoom_delay;
+			this.current.force_after_ms = after;
+			this.current.force_before_ms = before;
+			NETDATA.globalPanAndZoom.setMaster(this, after, before);
+			return ret;
+		}
+
+		this.legendFormatValue = function(value) {
+			if(value === null || value === 'undefined') return '-';
+			if(typeof value !== 'number') return value;
+
+			var abs = Math.abs(value);
+			if(abs >= 1000) return (Math.round(value)).toLocaleString();
+			if(abs >= 100 ) return (Math.round(value * 10) / 10).toLocaleString();
+			if(abs >= 1   ) return (Math.round(value * 100) / 100).toLocaleString();
+			if(abs >= 0.1 ) return (Math.round(value * 1000) / 1000).toLocaleString();
+			return (Math.round(value * 10000) / 10000).toLocaleString();
+		}
+
+		this.legendSetLabelValue = function(label, value) {
+			var series = this.element_legend_childs.series[label];
+			if(typeof series === 'undefined') return;
+			if(series.value === null && series.user === null) return;
+
+			// if the value has not changed, skip DOM update
+			//if(series.last === value) return;
+
+			var s, r;
+			if(typeof value === 'number') {
+				var v = Math.abs(value);
+				s = r = this.legendFormatValue(value);
+
+				if(typeof series.last === 'number') {
+					if(v > series.last) s += '<i class="fa fa-angle-up" style="width: 8px; text-align: center; overflow: hidden; vertical-align: middle;"></i>';
+					else if(v < series.last) s += '<i class="fa fa-angle-down" style="width: 8px; text-align: center; overflow: hidden; vertical-align: middle;"></i>';
+					else s += '<i class="fa fa-angle-left" style="width: 8px; text-align: center; overflow: hidden; vertical-align: middle;"></i>';
+				}
+				else s += '<i class="fa fa-angle-right" style="width: 8px; text-align: center; overflow: hidden; vertical-align: middle;"></i>';
+				series.last = v;
+			}
+			else {
+				s = r = value;
+				series.last = value;
+			}
+
+			if(series.value !== null) series.value.innerHTML = s;
+			if(series.user !== null) series.user.innerHTML = r;
+		}
+
+		this.legendSetDate = function(ms) {
+			if(typeof ms !== 'number') {
+				this.legendShowUndefined();
+				return;
+			}
+
+			var d = new Date(ms);
+
+			if(this.element_legend_childs.title_date)
+				this.element_legend_childs.title_date.innerHTML = d.toLocaleDateString();
+
+			if(this.element_legend_childs.title_time)
+				this.element_legend_childs.title_time.innerHTML = d.toLocaleTimeString();
+
+			if(this.element_legend_childs.title_units)
+				this.element_legend_childs.title_units.innerHTML = this.units;
+		}
+
+		this.legendShowUndefined = function() {
+			if(this.element_legend_childs.title_date)
+				this.element_legend_childs.title_date.innerHTML = '&nbsp;';
+
+			if(this.element_legend_childs.title_time)
+				this.element_legend_childs.title_time.innerHTML = this.chart.name;
+
+			if(this.element_legend_childs.title_units)
+				this.element_legend_childs.title_units.innerHTML = '&nbsp;';
+
+			if(this.data && this.element_legend_childs.series !== null) {
+				var labels = this.data.dimension_names;
+				var i = labels.length;
+				while(i--) {
+					var label = labels[i];
+
+					if(typeof label === 'undefined') continue;
+					if(typeof this.element_legend_childs.series[label] === 'undefined') continue;
+					this.legendSetLabelValue(label, null);
+				}
+			}
+		}
+
+		this.legendShowLatestValues = function() {
+			if(this.chart === null) return;
+			if(this.selected) return;
+
+			if(this.data === null || this.element_legend_childs.series === null) {
+				this.legendShowUndefined();
+				return;
+			}
+
+			var show_undefined = true;
+			if(Math.abs(this.netdata_last - this.view_before) <= this.data_update_every)
+				show_undefined = false;
+
+			if(show_undefined) {
+				this.legendShowUndefined();
+				return;
+			}
+
+			this.legendSetDate(this.view_before);
+
+			var labels = this.data.dimension_names;
+			var i = labels.length;
+			while(i--) {
+				var label = labels[i];
+
+				if(typeof label === 'undefined') continue;
+				if(typeof this.element_legend_childs.series[label] === 'undefined') continue;
+
+				if(show_undefined)
+					this.legendSetLabelValue(label, null);
+				else
+					this.legendSetLabelValue(label, this.data.view_latest_values[i]);
+			}
+		}
+
+		this.legendReset = function() {
+			this.legendShowLatestValues();
+		}
+
+		// this should be called just ONCE per dimension per chart
+		this._chartDimensionColor = function(label) {
+			if(this.colors === null) this.chartColors();
+
+			if(typeof this.colors_assigned[label] === 'undefined') {
+				if(this.colors_available.length === 0) {
+					for(var i = 0, len = NETDATA.themes.current.colors.length; i < len ; i++)
+						this.colors_available.push(NETDATA.themes.current.colors[i]);
+				}
+
+				this.colors_assigned[label] = this.colors_available.shift();
+
+				if(this.debug === true)
+					this.log('label "' + label + '" got color "' + this.colors_assigned[label]);
+			}
+			else {
+				if(this.debug === true)
+					this.log('label "' + label + '" already has color "' + this.colors_assigned[label] + '"');
+			}
+
+			this.colors.push(this.colors_assigned[label]);
+			return this.colors_assigned[label];
+		}
+
+		this.chartColors = function() {
+			if(this.colors !== null) return this.colors;
+
+			this.colors = new Array();
+			this.colors_available = new Array();
+
+			var c = $(this.element).data('colors');
+			// this.log('read colors: ' + c);
+			if(typeof c !== 'undefined' && c !== null && c.length > 0) {
+				if(typeof c !== 'string') {
+					this.log('invalid color given: ' + c + ' (give a space separated list of colors)');
+				}
+				else {
+					c = c.split(' ');
+					var added = 0;
+
+					while(added < 20) {
+						for(var i = 0, len = c.length; i < len ; i++) {
+							added++;
+							this.colors_available.push(c[i]);
+							// this.log('adding color: ' + c[i]);
+						}
+					}
+				}
+			}
+
+			// push all the standard colors too
+			for(var i = 0, len = NETDATA.themes.current.colors.length; i < len ; i++)
+				this.colors_available.push(NETDATA.themes.current.colors[i]);
+
+			return this.colors;
+		}
+
+		this.legendUpdateDOM = function() {
+			var needed = false;
+
+			// check that the legend DOM is up to date for the downloaded dimensions
+			if(typeof this.element_legend_childs.series !== 'object' || this.element_legend_childs.series === null) {
+				// this.log('the legend does not have any series - requesting legend update');
+				needed = true;
+			}
+			else if(this.data === null) {
+				// this.log('the chart does not have any data - requesting legend update');
+				needed = true;
+			}
+			else if(typeof this.element_legend_childs.series.labels_key === 'undefined') {
+				needed = true;
+			}
+			else {
+				var labels = this.data.dimension_names.toString();
+				if(labels !== this.element_legend_childs.series.labels_key) {
+					needed = true;
+
+					if(this.debug === true)
+						this.log('NEW LABELS: "' + labels + '" NOT EQUAL OLD LABELS: "' + this.element_legend_childs.series.labels_key + '"');
+				}
+			}
+
+			if(needed === false) {
+				// make sure colors available
+				this.chartColors();
+
+				// do we have to update the current values?
+				// we do this, only when the visible chart is current
+				if(Math.abs(this.netdata_last - this.view_before) <= this.data_update_every) {
+					if(this.debug === true)
+						this.log('chart is in latest position... updating values on legend...');
+
+					//var labels = this.data.dimension_names;
+					//var i = labels.length;
+					//while(i--)
+					//	this.legendSetLabelValue(labels[i], this.data.latest_values[i]);
+				}
+				return;
+			}
+			if(this.colors === null) {
+				// this is the first time we update the chart
+				// let's assign colors to all dimensions
+				if(this.library.track_colors() === true)
+					for(var dim in this.chart.dimensions)
+						this._chartDimensionColor(this.chart.dimensions[dim].name);
+			}
+			// we will re-generate the colors for the chart
+			// based on the selected dimensions
+			this.colors = null;
+
+			if(this.debug === true)
+				this.log('updating Legend DOM');
+
+			// mark all dimensions as invalid
+			this.dimensions_visibility.invalidateAll();
+
+			var genLabel = function(state, parent, name, count) {
+				var color = state._chartDimensionColor(name);
+
+				var user_element = null;
+				var user_id = self.data('show-value-of-' + name + '-at') || null;
+				if(user_id !== null) {
+					user_element = document.getElementById(user_id) || null;
+					if(user_element === null)
+						me.log('Cannot find element with id: ' + user_id);
+				}
+
+				state.element_legend_childs.series[name] = {
+					name: document.createElement('span'),
+					value: document.createElement('span'),
+					user: user_element,
+					last: null
+				};
+
+				var label = state.element_legend_childs.series[name];
+
+				// create the dimension visibility tracking for this label
+				state.dimensions_visibility.dimensionAdd(name, label.name, label.value, color);
+
+				var rgb = NETDATA.colorHex2Rgb(color);
+				label.name.innerHTML = '<table class="netdata-legend-name-table-'
+					+ state.chart.chart_type
+					+ '" style="background-color: '
+					+ 'rgba(' + rgb.r + ',' + rgb.g + ',' + rgb.b + ',' + NETDATA.options.current['color_fill_opacity_' + state.chart.chart_type] + ')'
+					+ '"><tr class="netdata-legend-name-tr"><td class="netdata-legend-name-td"></td></tr></table>'
+
+				var text = document.createTextNode(' ' + name);
+				label.name.appendChild(text);
+
+				if(count > 0)
+					parent.appendChild(document.createElement('br'));
+
+				parent.appendChild(label.name);
+				parent.appendChild(label.value);
+			};
+
+			var content = document.createElement('div');
+
+			if(this.hasLegend()) {
+				this.element_legend_childs = {
+					content: content,
+					resize_handler: document.createElement('div'),
+					title_date: document.createElement('span'),
+					title_time: document.createElement('span'),
+					title_units: document.createElement('span'),
+					nano: document.createElement('div'),
+					nano_options: {
+						paneClass: 'netdata-legend-series-pane',
+						sliderClass: 'netdata-legend-series-slider',
+						contentClass: 'netdata-legend-series-content',
+						enabledClass: '__enabled',
+						flashedClass: '__flashed',
+						activeClass: '__active',
+						tabIndex: -1,
+						alwaysVisible: true,
+						sliderMinHeight: 10
+					},
+					series: {}
+				};
+
+				this.element_legend.innerHTML = '';
+
+				this.element_legend_childs.resize_handler.className += " netdata-legend-resize-handler";
+				this.element_legend_childs.resize_handler.innerHTML = '<i class="fa fa-chevron-up"></i><i class="fa fa-chevron-down"></i>';
+				this.element.appendChild(this.element_legend_childs.resize_handler);
+
+				// mousedown event
+				this.element_legend_childs.resize_handler.onmousedown =
+					function(e) {
+						that.resizeHandler(e);
+					};
+
+				// touchstart event
+				this.element_legend_childs.resize_handler.addEventListener('touchstart', function(e) {
+					that.resizeHandler(e);
+				}, false);
+
+				this.element_legend_childs.title_date.className += " netdata-legend-title-date";
+				this.element_legend.appendChild(this.element_legend_childs.title_date);
+
+				this.element_legend.appendChild(document.createElement('br'));
+
+				this.element_legend_childs.title_time.className += " netdata-legend-title-time";
+				this.element_legend.appendChild(this.element_legend_childs.title_time);
+
+				this.element_legend.appendChild(document.createElement('br'));
+
+				this.element_legend_childs.title_units.className += " netdata-legend-title-units";
+				this.element_legend.appendChild(this.element_legend_childs.title_units);
+
+				this.element_legend.appendChild(document.createElement('br'));
+
+				this.element_legend_childs.nano.className = 'netdata-legend-series';
+				this.element_legend.appendChild(this.element_legend_childs.nano);
+
+				content.className = 'netdata-legend-series-content';
+				this.element_legend_childs.nano.appendChild(content);
+			}
+			else {
+				this.element_legend_childs = {
+					content: content,
+					resize_handler: null,
+					title_date: null,
+					title_time: null,
+					title_units: null,
+					nano: null,
+					nano_options: null,
+					series: {}
+				};
+			}
+
+			if(this.data) {
+				this.element_legend_childs.series.labels_key = this.data.dimension_names.toString();
+				if(this.debug === true)
+					this.log('labels from data: "' + this.element_legend_childs.series.labels_key + '"');
+
+				for(var i = 0, len = this.data.dimension_names.length; i < len ;i++) {
+					genLabel(this, content, this.data.dimension_names[i], i);
+				}
+			}
+			else {
+				var tmp = new Array();
+				for(var dim in this.chart.dimensions) {
+					tmp.push(this.chart.dimensions[dim].name);
+					genLabel(this, content, this.chart.dimensions[dim].name, i);
+				}
+				this.element_legend_childs.series.labels_key = tmp.toString();
+				if(this.debug === true)
+					this.log('labels from chart: "' + this.element_legend_childs.series.labels_key + '"');
+			}
+
+			// create a hidden div to be used for hidding
+			// the original legend of the chart library
+			var el = document.createElement('div');
+			if(this.element_legend !== null)
+				this.element_legend.appendChild(el);
+			el.style.display = 'none';
+
+			this.element_legend_childs.hidden = document.createElement('div');
+			el.appendChild(this.element_legend_childs.hidden);
+
+			if(this.element_legend_childs.nano !== null && this.element_legend_childs.nano_options !== null)
+				$(this.element_legend_childs.nano).nanoScroller(this.element_legend_childs.nano_options);
+
+			this.legendShowLatestValues();
+		}
+
+		this.hasLegend = function() {
+			if(typeof this.___hasLegendCache___ !== 'undefined')
+				return this.___hasLegendCache___;
+
+			var leg = false;
+			if(this.library && this.library.legend(this) === 'right-side') {
+				var legend = $(this.element).data('legend') || 'yes';
+				if(legend === 'yes') leg = true;
+			}
+
+			this.___hasLegendCache___ = leg;
+			return leg;
+		}
+
+		this.legendWidth = function() {
+			return (this.hasLegend())?140:0;
+		}
+
+		this.legendHeight = function() {
+			return $(this.element).height();
+		}
+
+		this.chartWidth = function() {
+			return $(this.element).width() - this.legendWidth();
+		}
+
+		this.chartHeight = function() {
+			return $(this.element).height();
+		}
+
+		this.chartPixelsPerPoint = function() {
+			// force an options provided detail
+			var px = this.pixels_per_point;
+
+			if(this.library && px < this.library.pixels_per_point(this))
+				px = this.library.pixels_per_point(this);
+
+			if(px < NETDATA.options.current.pixels_per_point)
+				px = NETDATA.options.current.pixels_per_point;
+
+			return px;
+		}
+
+		this.needsRecreation = function() {
+			return (
+					this.chart_created === true
+					&& this.library
+					&& this.library.autoresize() === false
+					&& this.tm.last_resized < NETDATA.options.last_resized
+				);
+		}
+
+		this.chartURL = function() {
+			var after, before, points_multiplier = 1;
+			if(NETDATA.globalPanAndZoom.isActive() && NETDATA.globalPanAndZoom.isMaster(this) === false) {
+				this.tm.pan_and_zoom_seq = NETDATA.globalPanAndZoom.seq;
+
+				after = Math.round(NETDATA.globalPanAndZoom.force_after_ms / 1000);
+				before = Math.round(NETDATA.globalPanAndZoom.force_before_ms / 1000);
+				this.view_after = after * 1000;
+				this.view_before = before * 1000;
+
+				this.requested_padding = null;
+				points_multiplier = 1;
+			}
+			else if(this.current.force_before_ms !== null && this.current.force_after_ms !== null) {
+				this.tm.pan_and_zoom_seq = 0;
+
+				before = Math.round(this.current.force_before_ms / 1000);
+				after  = Math.round(this.current.force_after_ms / 1000);
+				this.view_after = after * 1000;
+				this.view_before = before * 1000;
+
+				if(NETDATA.options.current.pan_and_zoom_data_padding === true) {
+					this.requested_padding = Math.round((before - after) / 2);
+					after -= this.requested_padding;
+					before += this.requested_padding;
+					this.requested_padding *= 1000;
+					points_multiplier = 2;
+				}
+
+				this.current.force_before_ms = null;
+				this.current.force_after_ms = null;
+			}
+			else {
+				this.tm.pan_and_zoom_seq = 0;
+
+				before = this.before;
+				after  = this.after;
+				this.view_after = after * 1000;
+				this.view_before = before * 1000;
+
+				this.requested_padding = null;
+				points_multiplier = 1;
+			}
+
+			this.requested_after = after * 1000;
+			this.requested_before = before * 1000;
+
+			this.data_points = this.points || Math.round(this.chartWidth() / this.chartPixelsPerPoint());
+
+			// build the data URL
+			this.data_url = this.host + this.chart.data_url;
+			this.data_url += "&format="  + this.library.format();
+			this.data_url += "&points="  + (this.data_points * points_multiplier).toString();
+			this.data_url += "&group="   + this.method;
+			this.data_url += "&options=" + this.library.options(this);
+			this.data_url += '|jsonwrap';
+
+			if(NETDATA.options.current.eliminate_zero_dimensions === true)
+				this.data_url += '|nonzero';
+
+			if(this.append_options !== null)
+				this.data_url += '|' + this.append_options.toString();
+
+			if(after)
+				this.data_url += "&after="  + after.toString();
+
+			if(before)
+				this.data_url += "&before=" + before.toString();
+
+			if(this.dimensions)
+				this.data_url += "&dimensions=" + this.dimensions;
+
+			if(NETDATA.options.debug.chart_data_url === true || this.debug === true)
+				this.log('chartURL(): ' + this.data_url + ' WxH:' + this.chartWidth() + 'x' + this.chartHeight() + ' points: ' + this.data_points + ' library: ' + this.library_name);
+		}
+
+		this.redrawChart = function() {
+			if(this.data !== null)
+				this.updateChartWithData(this.data);
+		}
+
+		this.updateChartWithData = function(data) {
+			if(this.debug === true)
+				this.log('updateChartWithData() called.');
+
+			this._updating = false;
+
+			// this may force the chart to be re-created
+			resizeChart();
+
+			this.data = data;
+			this.updates_counter++;
+			this.updates_since_last_unhide++;
+			this.updates_since_last_creation++;
+
+			var started = new Date().getTime();
+
+			// if the result is JSON, find the latest update-every
+			this.data_update_every = data.view_update_every * 1000;
+			this.data_after = data.after * 1000;
+			this.data_before = data.before * 1000;
+			this.netdata_first = data.first_entry * 1000;
+			this.netdata_last = data.last_entry * 1000;
+			this.data_points = data.points;
+			data.state = this;
+
+			if(NETDATA.options.current.pan_and_zoom_data_padding === true && this.requested_padding !== null) {
+				if(this.view_after < this.data_after) {
+					// console.log('adusting view_after from ' + this.view_after + ' to ' + this.data_after);
+					this.view_after = this.data_after;
+				}
+				
+				if(this.view_before > this.data_before) {
+					// console.log('adusting view_before from ' + this.view_before + ' to ' + this.data_before);
+					this.view_before = this.data_before;
+				}
+			}
+			else {
+				this.view_after = this.data_after;
+				this.view_before = this.data_before;
+			}
+
+			if(this.debug === true) {
+				this.log('UPDATE No ' + this.updates_counter + ' COMPLETED');
+
+				if(this.current.force_after_ms)
+					this.log('STATUS: forced    : ' + (this.current.force_after_ms / 1000).toString() + ' - ' + (this.current.force_before_ms / 1000).toString());
+				else
+					this.log('STATUS: forced    : unset');
+
+				this.log('STATUS: requested : ' + (this.requested_after / 1000).toString() + ' - ' + (this.requested_before / 1000).toString());
+				this.log('STATUS: downloaded: ' + (this.data_after / 1000).toString() + ' - ' + (this.data_before / 1000).toString());
+				this.log('STATUS: rendered  : ' + (this.view_after / 1000).toString() + ' - ' + (this.view_before / 1000).toString());
+				this.log('STATUS: points    : ' + (this.data_points).toString());
+			}
+
+			if(this.data_points === 0) {
+				noDataToShow();
+				return;
+			}
+
+			if(this.updates_since_last_creation >= this.library.max_updates_to_recreate()) {
+				if(this.debug === true)
+					this.log('max updates of ' + this.updates_since_last_creation.toString() + ' reached. Forcing re-generation.');
+
+				this.chart_created = false;
+			}
+
+			// check and update the legend
+			this.legendUpdateDOM();
+
+			if(this.chart_created === true
+				&& typeof this.library.update === 'function') {
+
+				if(this.debug === true)
+					this.log('updating chart...');
+
+				if(callChartLibraryUpdateSafely(data) === false)
+					return;
+			}
+			else {
+				if(this.debug === true)
+					this.log('creating chart...');
+
+				if(callChartLibraryCreateSafely(data) === false)
+					return;
+			}
+			hideMessage();
+			this.legendShowLatestValues();
+			if(this.selected === true)
+				NETDATA.globalSelectionSync.stop();
+
+			// update the performance counters
+			var now = new Date().getTime();
+			this.tm.last_updated = now;
+
+			// don't update last_autorefreshed if this chart is
+			// forced to be updated with global PanAndZoom
+			if(NETDATA.globalPanAndZoom.isActive())
+				this.tm.last_autorefreshed = 0;
+			else {
+				if(NETDATA.options.current.parallel_refresher === true && NETDATA.options.current.concurrent_refreshes)
+					this.tm.last_autorefreshed = Math.round(now / this.data_update_every) * this.data_update_every;
+				else
+					this.tm.last_autorefreshed = now;
+			}
+
+			this.refresh_dt_ms = now - started;
+			NETDATA.options.auto_refresher_fast_weight += this.refresh_dt_ms;
+
+			if(this.refresh_dt_element !== null)
+				this.refresh_dt_element.innerHTML = this.refresh_dt_ms.toString();
+		}
+
+		this.updateChart = function(callback) {
+			if(this.debug === true)
+				this.log('updateChart() called.');
+
+			if(this._updating === true) {
+				if(this.debug === true)
+					this.log('I am already updating...');
+
+				if(typeof callback === 'function') callback();
+				return false;
+			}
+
+			// due to late initialization of charts and libraries
+			// we need to check this too
+			if(this.enabled === false) {
+				if(this.debug === true)
+					this.log('I am not enabled');
+
+				if(typeof callback === 'function') callback();
+				return false;
+			}
+
+			if(canBeRendered() === false) {
+				if(typeof callback === 'function') callback();
+				return false;
+			}
+
+			if(this.chart === null) {
+				this.getChart(function() { that.updateChart(callback); });
+				return false;
+			}
+
+			if(this.library.initialized === false) {
+				if(this.library.enabled === true) {
+					this.library.initialize(function() { that.updateChart(callback); });
+					return false;
+				}
+				else {
+					error('chart library "' + this.library_name + '" is not available.');
+					if(typeof callback === 'function') callback();
+					return false;
+				}
+			}
+
+			this.clearSelection();
+			this.chartURL();
+
+			if(this.debug === true)
+				this.log('updating from ' + this.data_url);
+
+			this._updating = true;
+
+			this.xhr = $.ajax( {
+				url: this.data_url,
+				crossDomain: NETDATA.options.crossDomainAjax,
+				cache: false,
+				async: true
+			})
+			.success(function(data) {
+				if(that.debug === true)
+					that.log('data received. updating chart.');
+
+				that.updateChartWithData(data);
+			})
+			.fail(function() {
+				error('data download failed for url: ' + that.data_url);
+			})
+			.always(function() {
+				this._updating = false;
+				if(typeof callback === 'function') callback();
+			});
+
+			return true;
+		}
+
+		this.isVisible = function(nocache) {
+			if(typeof nocache === 'undefined')
+				nocache = false;
+
+			// this.log('last_visible_check: ' + this.tm.last_visible_check + ', last_page_scroll: ' + NETDATA.options.last_page_scroll);
+
+			// caching - we do not evaluate the charts visibility
+			// if the page has not been scrolled since the last check
+			if(nocache === false && this.tm.last_visible_check > NETDATA.options.last_page_scroll)
+				return this.___isVisible___;
+
+			this.tm.last_visible_check = new Date().getTime();
+
+			var wh = window.innerHeight;
+			var x = this.element.getBoundingClientRect();
+			var ret = 0;
+			var tolerance = 0;
+
+			if(x.width === 0 || x.height === 0) {
+				hideChart();
+				this.___isVisible___ = false;
+				return this.___isVisible___;
+			}
+
+			if(x.top < 0 && -x.top > x.height) {
+				// the chart is entirely above
+				ret = -x.top - x.height;
+			}
+			else if(x.top > wh) {
+				// the chart is entirely below
+				ret = x.top - wh;
+			}
+
+			if(ret > tolerance) {
+				// the chart is too far
+
+				hideChart();
+				this.___isVisible___ = false;
+				return this.___isVisible___;
+			}
+			else {
+				// the chart is inside or very close
+
+				unhideChart();
+				this.___isVisible___ = true;
+				return this.___isVisible___;
+			}
+		}
+
+		this.isAutoRefreshed = function() {
+			return (this.current.autorefresh);
+		}
+
+		this.canBeAutoRefreshed = function() {
+			now = new Date().getTime();
+
+			if(this.enabled === false) {
+				if(this.debug === true)
+					this.log('I am not enabled');
+
+				return false;
+			}
+
+			if(this.library === null || this.library.enabled === false) {
+				error('charting library "' + this.library_name + '" is not available');
+				if(this.debug === true)
+					this.log('My chart library ' + this.library_name + ' is not available');
+
+				return false;
+			}
+
+			if(this.isVisible() === false) {
+				if(NETDATA.options.debug.visibility === true || this.debug === true)
+					this.log('I am not visible');
+
+				return false;
+			}
+
+			if(this.current.force_update_at !== 0 && this.current.force_update_at < now) {
+				if(this.debug === true)
+					this.log('timed force update detected - allowing this update');
+
+				this.current.force_update_at = 0;
+				return true;
+			}
+
+			if(this.isAutoRefreshed() === true) {
+				// allow the first update, even if the page is not visible
+				if(this.updates_counter && this.updates_since_last_unhide && NETDATA.options.page_is_visible === false) {
+					if(NETDATA.options.debug.focus === true || this.debug === true)
+						this.log('canBeAutoRefreshed(): page does not have focus');
+
+					return false;
+				}
+
+				if(this.needsRecreation() === true) {
+					if(this.debug === true)
+						this.log('canBeAutoRefreshed(): needs re-creation.');
+
+					return true;
+				}
+
+				// options valid only for autoRefresh()
+				if(NETDATA.options.auto_refresher_stop_until === 0 || NETDATA.options.auto_refresher_stop_until < now) {
+					if(NETDATA.globalPanAndZoom.isActive()) {
+						if(NETDATA.globalPanAndZoom.shouldBeAutoRefreshed(this)) {
+							if(this.debug === true)
+								this.log('canBeAutoRefreshed(): global panning: I need an update.');
+
+							return true;
+						}
+						else {
+							if(this.debug === true)
+								this.log('canBeAutoRefreshed(): global panning: I am already up to date.');
+
+							return false;
+						}
+					}
+
+					if(this.selected === true) {
+						if(this.debug === true)
+							this.log('canBeAutoRefreshed(): I have a selection in place.');
+
+						return false;
+					}
+
+					if(this.paused === true) {
+						if(this.debug === true)
+							this.log('canBeAutoRefreshed(): I am paused.');
+
+						return false;
+					}
+
+					if(now - this.tm.last_autorefreshed >= this.data_update_every) {
+						if(this.debug === true)
+							this.log('canBeAutoRefreshed(): It is time to update me.');
+
+						return true;
+					}
+				}
+			}
+
+			return false;
+		}
+
+		this.autoRefresh = function(callback) {
+			if(this.canBeAutoRefreshed() === true) {
+				this.updateChart(callback);
+			}
+			else {
+				if(typeof callback !== 'undefined')
+					callback();
+			}
+		}
+
+		this._defaultsFromDownloadedChart = function(chart) {
+			this.chart = chart;
+			this.chart_url = chart.url;
+			this.data_update_every = chart.update_every * 1000;
+			this.data_points = Math.round(this.chartWidth() / this.chartPixelsPerPoint());
+			this.tm.last_info_downloaded = new Date().getTime();
+
+			if(this.title === null)
+				this.title = chart.title;
+
+			if(this.units === null)
+				this.units = chart.units;
+		}
+
+		// fetch the chart description from the netdata server
+		this.getChart = function(callback) {
+			this.chart = NETDATA.chartRegistry.get(this.host, this.id);
+			if(this.chart) {
+				this._defaultsFromDownloadedChart(this.chart);
+				if(typeof callback === 'function') callback();
+			}
+			else {
+				this.chart_url = "/api/v1/chart?chart=" + this.id;
+
+				if(this.debug === true)
+					this.log('downloading ' + this.chart_url);
+
+				$.ajax( {
+					url:  this.host + this.chart_url,
+					crossDomain: NETDATA.options.crossDomainAjax,
+					cache: false,
+					async: true
+				})
+				.done(function(chart) {
+					chart.url = that.chart_url;
+					that._defaultsFromDownloadedChart(chart);
+					NETDATA.chartRegistry.add(that.host, that.id, chart);
+				})
+				.fail(function() {
+					NETDATA.error(404, that.chart_url);
+					error('chart not found on url "' + that.chart_url + '"');
+				})
+				.always(function() {
+					if(typeof callback === 'function') callback();
+				});
+			}
+		}
+
+		// ============================================================================================================
+		// INITIALIZATION
+
+		init();
+	}
+
+	NETDATA.resetAllCharts = function(state) {
+		// first clear the global selection sync
+		// to make sure no chart is in selected state
+		state.globalSelectionSyncStop();
+
+		// there are 2 possibilities here
+		// a. state is the global Pan and Zoom master
+		// b. state is not the global Pan and Zoom master
+		var master = true;
+		if(NETDATA.globalPanAndZoom.isMaster(state) === false)
+			master = false;
+
+		// clear the global Pan and Zoom
+		// this will also refresh the master
+		// and unblock any charts currently mirroring the master
+		NETDATA.globalPanAndZoom.clearMaster();
+
+		// if we were not the master, reset our status too
+		// this is required because most probably the mouse
+		// is over this chart, blocking it from autorefreshing
+		if(master === false && (state.paused === true || state.selected === true))
+			state.resetChart();
+	}
+
+	// get or create a chart state, given a DOM element
+	NETDATA.chartState = function(element) {
+		var state = $(element).data('netdata-state-object') || null;
+		if(state === null) {
+			state = new chartState(element);
+			$(element).data('netdata-state-object', state);
+		}
+		return state;
+	}
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// Library functions
+
+	// Load a script without jquery
+	// This is used to load jquery - after it is loaded, we use jquery
+	NETDATA._loadjQuery = function(callback) {
+		if(typeof jQuery === 'undefined') {
+			if(NETDATA.options.debug.main_loop === true)
+				console.log('loading ' + NETDATA.jQuery);
+
+			var script = document.createElement('script');
+			script.type = 'text/javascript';
+			script.async = true;
+			script.src = NETDATA.jQuery;
+
+			// script.onabort = onError;
+			script.onerror = function(err, t) { NETDATA.error(101, NETDATA.jQuery); };
+			if(typeof callback === "function")
+				script.onload = callback;
+
+			var s = document.getElementsByTagName('script')[0];
+			s.parentNode.insertBefore(script, s);
+		}
+		else if(typeof callback === "function")
+			callback();
+	}
+
+	NETDATA._loadCSS = function(filename) {
+		// don't use jQuery here
+		// styles are loaded before jQuery
+		// to eliminate showing an unstyled page to the user
+
+		var fileref = document.createElement("link");
+		fileref.setAttribute("rel", "stylesheet");
+		fileref.setAttribute("type", "text/css");
+		fileref.setAttribute("href", filename);
+
+		if (typeof fileref !== 'undefined')
+			document.getElementsByTagName("head")[0].appendChild(fileref);
+	}
+
+	NETDATA.colorHex2Rgb = function(hex) {
+		// Expand shorthand form (e.g. "03F") to full form (e.g. "0033FF")
+		var shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
+			hex = hex.replace(shorthandRegex, function(m, r, g, b) {
+			return r + r + g + g + b + b;
+		});
+
+		var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
+		return result ? {
+			r: parseInt(result[1], 16),
+			g: parseInt(result[2], 16),
+			b: parseInt(result[3], 16)
+		} : null;
+	}
+
+	NETDATA.colorLuminance = function(hex, lum) {
+		// validate hex string
+		hex = String(hex).replace(/[^0-9a-f]/gi, '');
+		if (hex.length < 6)
+			hex = hex[0]+hex[0]+hex[1]+hex[1]+hex[2]+hex[2];
+
+		lum = lum || 0;
+
+		// convert to decimal and change luminosity
+		var rgb = "#", c, i;
+		for (i = 0; i < 3; i++) {
+			c = parseInt(hex.substr(i*2,2), 16);
+			c = Math.round(Math.min(Math.max(0, c + (c * lum)), 255)).toString(16);
+			rgb += ("00"+c).substr(c.length);
+		}
+
+		return rgb;
+	}
+
+	NETDATA.guid = function() {
+		function s4() {
+			return Math.floor((1 + Math.random()) * 0x10000)
+					.toString(16)
+					.substring(1);
+			}
+
+			return s4() + s4() + '-' + s4() + '-' + s4() + '-' + s4() + '-' + s4() + s4() + s4();
+	}
+
+	NETDATA.zeropad = function(x) {
+		if(x > -10 && x < 10) return '0' + x.toString();
+		else return x.toString();
+	}
+
+	// user function to signal us the DOM has been
+	// updated.
+	NETDATA.updatedDom = function() {
+		NETDATA.options.updated_dom = true;
+	}
+
+	NETDATA.ready = function(callback) {
+		NETDATA.options.pauseCallback = callback;
+	}
+
+	NETDATA.pause = function(callback) {
+		if(NETDATA.options.pause === true)
+			callback();
+		else
+			NETDATA.options.pauseCallback = callback;
+	}
+
+	NETDATA.unpause = function() {
+		NETDATA.options.pauseCallback = null;
+		NETDATA.options.updated_dom = true;
+		NETDATA.options.pause = false;
+	}
+
+	// ----------------------------------------------------------------------------------------------------------------
+
+	// this is purely sequencial charts refresher
+	// it is meant to be autonomous
+	NETDATA.chartRefresherNoParallel = function(index) {
+		if(NETDATA.options.debug.mail_loop === true)
+			console.log('NETDATA.chartRefresherNoParallel(' + index + ')');
+
+		if(NETDATA.options.updated_dom === true) {
+			// the dom has been updated
+			// get the dom parts again
+			NETDATA.parseDom(NETDATA.chartRefresher);
+			return;
+		}
+		if(index >= NETDATA.options.targets.length) {
+			if(NETDATA.options.debug.main_loop === true)
+				console.log('waiting to restart main loop...');
+
+			NETDATA.options.auto_refresher_fast_weight = 0;
+
+			setTimeout(function() {
+				NETDATA.chartRefresher();
+			}, NETDATA.options.current.idle_between_loops);
+		}
+		else {
+			var state = NETDATA.options.targets[index];
+
+			if(NETDATA.options.auto_refresher_fast_weight < NETDATA.options.current.fast_render_timeframe) {
+				if(NETDATA.options.debug.main_loop === true)
+					console.log('fast rendering...');
+
+				state.autoRefresh(function() {
+					NETDATA.chartRefresherNoParallel(++index);
+				});
+			}
+			else {
+				if(NETDATA.options.debug.main_loop === true) console.log('waiting for next refresh...');
+				NETDATA.options.auto_refresher_fast_weight = 0;
+
+				setTimeout(function() {
+					state.autoRefresh(function() {
+						NETDATA.chartRefresherNoParallel(++index);
+					});
+				}, NETDATA.options.current.idle_between_charts);
+			}
+		}
+	}
+
+	// this is part of the parallel refresher
+	// its cause is to refresh sequencially all the charts
+	// that depend on chart library initialization
+	// it will call the parallel refresher back
+	// as soon as it sees a chart that its chart library
+	// is initialized
+	NETDATA.chartRefresher_unitialized = function() {
+		if(NETDATA.options.updated_dom === true) {
+			// the dom has been updated
+			// get the dom parts again
+			NETDATA.parseDom(NETDATA.chartRefresher);
+			return;
+		}
+
+		if(NETDATA.options.sequencial.length === 0)
+			NETDATA.chartRefresher();
+		else {
+			var state = NETDATA.options.sequencial.pop();
+			if(state.library.initialized === true)
+				NETDATA.chartRefresher();
+			else
+				state.autoRefresh(NETDATA.chartRefresher_unitialized);
+		}
+	}
+
+	NETDATA.chartRefresherWaitTime = function() {
+		return NETDATA.options.current.idle_parallel_loops;
+	}
+
+	// the default refresher
+	// it will create 2 sets of charts:
+	// - the ones that can be refreshed in parallel
+	// - the ones that depend on something else
+	// the first set will be executed in parallel
+	// the second will be given to NETDATA.chartRefresher_unitialized()
+	NETDATA.chartRefresher = function() {
+		if(NETDATA.options.pause === true) {
+			// console.log('auto-refresher is paused');
+			setTimeout(NETDATA.chartRefresher,
+				NETDATA.chartRefresherWaitTime());
+			return;
+		}
+
+		if(typeof NETDATA.options.pauseCallback === 'function') {
+			// console.log('auto-refresher is calling pauseCallback');
+			NETDATA.options.pause = true;
+			NETDATA.options.pauseCallback();
+			NETDATA.chartRefresher();
+			return;
+		}
+
+		if(NETDATA.options.current.parallel_refresher === false) {
+			NETDATA.chartRefresherNoParallel(0);
+			return;
+		}
+
+		if(NETDATA.options.updated_dom === true) {
+			// the dom has been updated
+			// get the dom parts again
+			NETDATA.parseDom(NETDATA.chartRefresher);
+			return;
+		}
+
+		var parallel = new Array();
+		var targets = NETDATA.options.targets;
+		var len = targets.length;
+		while(len--) {
+			if(targets[len].isVisible() === false)
+				continue;
+
+			var state = targets[len];
+			if(state.library.initialized === false) {
+				if(state.library.enabled === true) {
+					state.library.initialize(NETDATA.chartRefresher);
+					return;
+				}
+				else {
+					state.error('chart library "' + state.library_name + '" is not enabled.');
+				}
+			}
+
+			parallel.unshift(state);
+		}
+
+		if(parallel.length > 0) {
+			var parallel_jobs = parallel.length;
+
+			// this will execute the jobs in parallel
+			$(parallel).each(function() {
+				this.autoRefresh(function() {
+					parallel_jobs--;
+
+					if(parallel_jobs === 0) {
+						setTimeout(NETDATA.chartRefresher,
+							NETDATA.chartRefresherWaitTime());
+					}
+				});
+			})
+		}
+		else {
+			setTimeout(NETDATA.chartRefresher,
+				NETDATA.chartRefresherWaitTime());
+		}
+	}
+
+	NETDATA.parseDom = function(callback) {
+		NETDATA.options.last_page_scroll = new Date().getTime();
+		NETDATA.options.updated_dom = false;
+
+		var targets = $('div[data-netdata]'); //.filter(':visible');
+
+		if(NETDATA.options.debug.main_loop === true)
+			console.log('DOM updated - there are ' + targets.length + ' charts on page.');
+
+		NETDATA.options.targets = new Array();
+		var len = targets.length;
+		while(len--) {
+			// the initialization will take care of sizing
+			// and the "loading..." message
+			NETDATA.options.targets.push(NETDATA.chartState(targets[len]));
+		}
+
+		if(typeof callback === 'function') callback();
+	}
+
+	// this is the main function - where everything starts
+	NETDATA.start = function() {
+		// this should be called only once
+
+		NETDATA.options.page_is_visible = true;
+
+		$(window).blur(function() {
+			if(NETDATA.options.current.stop_updates_when_focus_is_lost === true) {
+				NETDATA.options.page_is_visible = false;
+				if(NETDATA.options.debug.focus === true)
+					console.log('Lost Focus!');
+			}
+		});
+
+		$(window).focus(function() {
+			if(NETDATA.options.current.stop_updates_when_focus_is_lost === true) {
+				NETDATA.options.page_is_visible = true;
+				if(NETDATA.options.debug.focus === true)
+					console.log('Focus restored!');
+			}
+		});
+
+		if(typeof document.hasFocus === 'function' && !document.hasFocus()) {
+			if(NETDATA.options.current.stop_updates_when_focus_is_lost === true) {
+				NETDATA.options.page_is_visible = false;
+				if(NETDATA.options.debug.focus === true)
+					console.log('Document has no focus!');
+			}
+		}
+
+		// bootstrap tab switching
+		$('a[data-toggle="tab"]').on('shown.bs.tab', NETDATA.onscroll);
+
+		// bootstrap modal switching
+		$('.modal').on('hidden.bs.modal', NETDATA.onscroll);
+		$('.modal').on('shown.bs.modal', NETDATA.onscroll);
+		
+		NETDATA.parseDom(NETDATA.chartRefresher);
+	}
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// peity
+
+	NETDATA.peityInitialize = function(callback) {
+		if(typeof netdataNoPeitys === 'undefined' || !netdataNoPeitys) {
+			$.ajax({
+				url: NETDATA.peity_js,
+				cache: true,
+				dataType: "script"
+			})
+			.done(function() {
+				NETDATA.registerChartLibrary('peity', NETDATA.peity_js);
+			})
+			.fail(function() {
+				NETDATA.chartLibraries.peity.enabled = false;
+				NETDATA.error(100, NETDATA.peity_js);
+			})
+			.always(function() {
+				if(typeof callback === "function")
+					callback();
+			});
+		}
+		else {
+			NETDATA.chartLibraries.peity.enabled = false;
+			if(typeof callback === "function")
+				callback();
+		}
+	};
+
+	NETDATA.peityChartUpdate = function(state, data) {
+		state.peity_instance.innerHTML = data.result;
+
+		if(state.peity_options.stroke !== state.chartColors()[0]) {
+			state.peity_options.stroke = state.chartColors()[0];
+			if(state.chart.chart_type === 'line')
+				state.peity_options.fill = NETDATA.themes.current.background;
+			else
+				state.peity_options.fill = NETDATA.colorLuminance(state.chartColors()[0], NETDATA.chartDefaults.fill_luminance);
+		}
+
+		$(state.peity_instance).peity('line', state.peity_options);
+		return true;
+	}
+
+	NETDATA.peityChartCreate = function(state, data) {
+		state.peity_instance = document.createElement('div');
+		state.element_chart.appendChild(state.peity_instance);
+
+		var self = $(state.element);
+		state.peity_options = {
+			stroke: NETDATA.themes.current.foreground,
+			strokeWidth: self.data('peity-strokewidth') || 1,
+			width: state.chartWidth(),
+			height: state.chartHeight(),
+			fill: NETDATA.themes.current.foreground
+		};
+
+		NETDATA.peityChartUpdate(state, data);
+		return true;
+	}
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// sparkline
+
+	NETDATA.sparklineInitialize = function(callback) {
+		if(typeof netdataNoSparklines === 'undefined' || !netdataNoSparklines) {
+			$.ajax({
+				url: NETDATA.sparkline_js,
+				cache: true,
+				dataType: "script"
+			})
+			.done(function() {
+				NETDATA.registerChartLibrary('sparkline', NETDATA.sparkline_js);
+			})
+			.fail(function() {
+				NETDATA.chartLibraries.sparkline.enabled = false;
+				NETDATA.error(100, NETDATA.sparkline_js);
+			})
+			.always(function() {
+				if(typeof callback === "function")
+					callback();
+			});
+		}
+		else {
+			NETDATA.chartLibraries.sparkline.enabled = false;
+			if(typeof callback === "function") 
+				callback();
+		}
+	};
+
+	NETDATA.sparklineChartUpdate = function(state, data) {
+		state.sparkline_options.width = state.chartWidth();
+		state.sparkline_options.height = state.chartHeight();
+
+		$(state.element_chart).sparkline(data.result, state.sparkline_options);
+		return true;
+	}
+
+	NETDATA.sparklineChartCreate = function(state, data) {
+		var self = $(state.element);
+		var type = self.data('sparkline-type') || 'line';
+		var lineColor = self.data('sparkline-linecolor') || state.chartColors()[0];
+		var fillColor = self.data('sparkline-fillcolor') || (state.chart.chart_type === 'line')?NETDATA.themes.current.background:NETDATA.colorLuminance(lineColor, NETDATA.chartDefaults.fill_luminance);
+		var chartRangeMin = self.data('sparkline-chartrangemin') || undefined;
+		var chartRangeMax = self.data('sparkline-chartrangemax') || undefined;
+		var composite = self.data('sparkline-composite') || undefined;
+		var enableTagOptions = self.data('sparkline-enabletagoptions') || undefined;
+		var tagOptionPrefix = self.data('sparkline-tagoptionprefix') || undefined;
+		var tagValuesAttribute = self.data('sparkline-tagvaluesattribute') || undefined;
+		var disableHiddenCheck = self.data('sparkline-disablehiddencheck') || undefined;
+		var defaultPixelsPerValue = self.data('sparkline-defaultpixelspervalue') || undefined;
+		var spotColor = self.data('sparkline-spotcolor') || undefined;
+		var minSpotColor = self.data('sparkline-minspotcolor') || undefined;
+		var maxSpotColor = self.data('sparkline-maxspotcolor') || undefined;
+		var spotRadius = self.data('sparkline-spotradius') || undefined;
+		var valueSpots = self.data('sparkline-valuespots') || undefined;
+		var highlightSpotColor = self.data('sparkline-highlightspotcolor') || undefined;
+		var highlightLineColor = self.data('sparkline-highlightlinecolor') || undefined;
+		var lineWidth = self.data('sparkline-linewidth') || undefined;
+		var normalRangeMin = self.data('sparkline-normalrangemin') || undefined;
+		var normalRangeMax = self.data('sparkline-normalrangemax') || undefined;
+		var drawNormalOnTop = self.data('sparkline-drawnormalontop') || undefined;
+		var xvalues = self.data('sparkline-xvalues') || undefined;
+		var chartRangeClip = self.data('sparkline-chartrangeclip') || undefined;
+		var xvalues = self.data('sparkline-xvalues') || undefined;
+		var chartRangeMinX = self.data('sparkline-chartrangeminx') || undefined;
+		var chartRangeMaxX = self.data('sparkline-chartrangemaxx') || undefined;
+		var disableInteraction = self.data('sparkline-disableinteraction') || false;
+		var disableTooltips = self.data('sparkline-disabletooltips') || false;
+		var disableHighlight = self.data('sparkline-disablehighlight') || false;
+		var highlightLighten = self.data('sparkline-highlightlighten') || 1.4;
+		var highlightColor = self.data('sparkline-highlightcolor') || undefined;
+		var tooltipContainer = self.data('sparkline-tooltipcontainer') || undefined;
+		var tooltipClassname = self.data('sparkline-tooltipclassname') || undefined;
+		var tooltipFormat = self.data('sparkline-tooltipformat') || undefined;
+		var tooltipPrefix = self.data('sparkline-tooltipprefix') || undefined;
+		var tooltipSuffix = self.data('sparkline-tooltipsuffix') || ' ' + state.units;
+		var tooltipSkipNull = self.data('sparkline-tooltipskipnull') || true;
+		var tooltipValueLookups = self.data('sparkline-tooltipvaluelookups') || undefined;
+		var tooltipFormatFieldlist = self.data('sparkline-tooltipformatfieldlist') || undefined;
+		var tooltipFormatFieldlistKey = self.data('sparkline-tooltipformatfieldlistkey') || undefined;
+		var numberFormatter = self.data('sparkline-numberformatter') || function(n){ return n.toFixed(2); };
+		var numberDigitGroupSep = self.data('sparkline-numberdigitgroupsep') || undefined;
+		var numberDecimalMark = self.data('sparkline-numberdecimalmark') || undefined;
+		var numberDigitGroupCount = self.data('sparkline-numberdigitgroupcount') || undefined;
+		var animatedZooms = self.data('sparkline-animatedzooms') || false;
+
+		state.sparkline_options = {
+			type: type,
+			lineColor: lineColor,
+			fillColor: fillColor,
+			chartRangeMin: chartRangeMin,
+			chartRangeMax: chartRangeMax,
+			composite: composite,
+			enableTagOptions: enableTagOptions,
+			tagOptionPrefix: tagOptionPrefix,
+			tagValuesAttribute: tagValuesAttribute,
+			disableHiddenCheck: disableHiddenCheck,
+			defaultPixelsPerValue: defaultPixelsPerValue,
+			spotColor: spotColor,
+			minSpotColor: minSpotColor,
+			maxSpotColor: maxSpotColor,
+			spotRadius: spotRadius,
+			valueSpots: valueSpots,
+			highlightSpotColor: highlightSpotColor,
+			highlightLineColor: highlightLineColor,
+			lineWidth: lineWidth,
+			normalRangeMin: normalRangeMin,
+			normalRangeMax: normalRangeMax,
+			drawNormalOnTop: drawNormalOnTop,
+			xvalues: xvalues,
+			chartRangeClip: chartRangeClip,
+			chartRangeMinX: chartRangeMinX,
+			chartRangeMaxX: chartRangeMaxX,
+			disableInteraction: disableInteraction,
+			disableTooltips: disableTooltips,
+			disableHighlight: disableHighlight,
+			highlightLighten: highlightLighten,
+			highlightColor: highlightColor,
+			tooltipContainer: tooltipContainer,
+			tooltipClassname: tooltipClassname,
+			tooltipChartTitle: state.title,
+			tooltipFormat: tooltipFormat,
+			tooltipPrefix: tooltipPrefix,
+			tooltipSuffix: tooltipSuffix,
+			tooltipSkipNull: tooltipSkipNull,
+			tooltipValueLookups: tooltipValueLookups,
+			tooltipFormatFieldlist: tooltipFormatFieldlist,
+			tooltipFormatFieldlistKey: tooltipFormatFieldlistKey,
+			numberFormatter: numberFormatter,
+			numberDigitGroupSep: numberDigitGroupSep,
+			numberDecimalMark: numberDecimalMark,
+			numberDigitGroupCount: numberDigitGroupCount,
+			animatedZooms: animatedZooms,
+			width: state.chartWidth(),
+			height: state.chartHeight()
+		};
+
+		$(state.element_chart).sparkline(data.result, state.sparkline_options);
+		return true;
+	};
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// dygraph
+
+	NETDATA.dygraph = {
+		smooth: false
+	};
+
+	NETDATA.dygraphSetSelection = function(state, t) {
+		if(typeof state.dygraph_instance !== 'undefined') {
+			var r = state.calculateRowForTime(t);
+			if(r !== -1)
+				state.dygraph_instance.setSelection(r);
+			else {
+				state.dygraph_instance.clearSelection();
+				state.legendShowUndefined();
+			}
+		}
+
+		return true;
+	};
+
+	NETDATA.dygraphClearSelection = function(state, t) {
+		if(typeof state.dygraph_instance !== 'undefined') {
+			state.dygraph_instance.clearSelection();
+		}
+		return true;
+	};
+
+	NETDATA.dygraphSmoothInitialize = function(callback) {
+		$.ajax({
+			url: NETDATA.dygraph_smooth_js,
+			cache: true,
+			dataType: "script"
+		})
+		.done(function() {
+			NETDATA.dygraph.smooth = true;
+			smoothPlotter.smoothing = 0.3;
+		})
+		.fail(function() {
+			NETDATA.dygraph.smooth = false;
+		})
+		.always(function() {
+			if(typeof callback === "function")
+				callback();
+		});
+	}
+
+	NETDATA.dygraphInitialize = function(callback) {
+		if(typeof netdataNoDygraphs === 'undefined' || !netdataNoDygraphs) {
+			$.ajax({
+				url: NETDATA.dygraph_js,
+				cache: true,
+				dataType: "script"
+			})
+			.done(function() {
+				NETDATA.registerChartLibrary('dygraph', NETDATA.dygraph_js);
+			})
+			.fail(function() {
+				NETDATA.chartLibraries.dygraph.enabled = false;
+				NETDATA.error(100, NETDATA.dygraph_js);
+			})
+			.always(function() {
+				if(NETDATA.chartLibraries.dygraph.enabled === true && NETDATA.options.current.smooth_plot === true)
+					NETDATA.dygraphSmoothInitialize(callback);
+				else if(typeof callback === "function")
+					callback();
+			});
+		}
+		else {
+			NETDATA.chartLibraries.dygraph.enabled = false;
+			if(typeof callback === "function")
+				callback();
+		}
+	};
+
+	NETDATA.dygraphChartUpdate = function(state, data) {
+		var dygraph = state.dygraph_instance;
+
+		if(typeof dygraph === 'undefined')
+			return NETDATA.dygraphChartCreate(state, data);
+
+		// when the chart is not visible, and hidden
+		// if there is a window resize, dygraph detects
+		// its element size as 0x0.
+		// this will make it re-appear properly
+
+		if(state.tm.last_unhidden > state.dygraph_last_rendered)
+			dygraph.resize();
+
+		var options = {
+				file: data.result.data,
+				colors: state.chartColors(),
+				labels: data.result.labels,
+				labelsDivWidth: state.chartWidth() - 70,
+				visibility: state.dimensions_visibility.selected2BooleanArray(state.data.dimension_names)
+		};
+
+		if(state.dygraph_force_zoom === true) {
+			if(NETDATA.options.debug.dygraph === true || state.debug === true)
+				state.log('dygraphChartUpdate() forced zoom update');
+
+			options.dateWindow = (state.requested_padding !== null)?[ state.view_after, state.view_before ]:null;
+			options.valueRange = null;
+			options.isZoomedIgnoreProgrammaticZoom = true;
+			state.dygraph_force_zoom = false;
+		}
+		else if(state.current.name !== 'auto') {
+			if(NETDATA.options.debug.dygraph === true || state.debug === true)
+				state.log('dygraphChartUpdate() loose update');
+		}
+		else {
+			if(NETDATA.options.debug.dygraph === true || state.debug === true)
+				state.log('dygraphChartUpdate() strict update');
+
+			options.dateWindow = (state.requested_padding !== null)?[ state.view_after, state.view_before ]:null;
+			options.valueRange = null;
+			options.isZoomedIgnoreProgrammaticZoom = true;
+		}
+
+		if(state.dygraph_smooth_eligible === true) {
+			if((NETDATA.options.current.smooth_plot === true && state.dygraph_options.plotter !== smoothPlotter)
+				|| (NETDATA.options.current.smooth_plot === false && state.dygraph_options.plotter === smoothPlotter)) {
+				NETDATA.dygraphChartCreate(state, data);
+				return;
+			}
+		}
+
+		dygraph.updateOptions(options);
+
+		state.dygraph_last_rendered = new Date().getTime();
+		return true;
+	};
+
+	NETDATA.dygraphChartCreate = function(state, data) {
+		if(NETDATA.options.debug.dygraph === true || state.debug === true)
+			state.log('dygraphChartCreate()');
+
+		var self = $(state.element);
+
+		var chart_type = state.chart.chart_type;
+		if(chart_type === 'stacked' && data.dimensions === 1) chart_type = 'area';
+		chart_type = self.data('dygraph-type') || chart_type;
+
+		var smooth = (chart_type === 'line' && !NETDATA.chartLibraries.dygraph.isSparkline(state))?true:false;
+		smooth = self.data('dygraph-smooth') || smooth;
+
+		if(NETDATA.dygraph.smooth === false)
+			smooth = false;
+
+		var strokeWidth = (chart_type === 'stacked')?0.1:((smooth)?1.5:0.7)
+		var highlightCircleSize = (NETDATA.chartLibraries.dygraph.isSparkline(state))?3:4;
+
+		state.dygraph_options = {
+			colors: self.data('dygraph-colors') || state.chartColors(),
+
+			// leave a few pixels empty on the right of the chart
+			rightGap: self.data('dygraph-rightgap') || 5,
+			showRangeSelector: self.data('dygraph-showrangeselector') || false,
+			showRoller: self.data('dygraph-showroller') || false,
+
+			title: self.data('dygraph-title') || state.title,
+			titleHeight: self.data('dygraph-titleheight') || 19,
+
+			legend: self.data('dygraph-legend') || 'always', // 'onmouseover',
+			labels: data.result.labels,
+			labelsDiv: self.data('dygraph-labelsdiv') || state.element_legend_childs.hidden,
+			labelsDivStyles: self.data('dygraph-labelsdivstyles') || { 'fontSize':'1px' },
+			labelsDivWidth: self.data('dygraph-labelsdivwidth') || state.chartWidth() - 70,
+			labelsSeparateLines: self.data('dygraph-labelsseparatelines') || true,
+			labelsShowZeroValues: self.data('dygraph-labelsshowzerovalues') || true,
+			labelsKMB: false,
+			labelsKMG2: false,
+			showLabelsOnHighlight: self.data('dygraph-showlabelsonhighlight') || true,
+			hideOverlayOnMouseOut: self.data('dygraph-hideoverlayonmouseout') || true,
+
+			ylabel: state.units,
+			yLabelWidth: self.data('dygraph-ylabelwidth') || 12,
+
+			// the function to plot the chart
+			plotter: null,
+
+			// The width of the lines connecting data points. This can be used to increase the contrast or some graphs.
+			strokeWidth: self.data('dygraph-strokewidth') || strokeWidth,
+			strokePattern: self.data('dygraph-strokepattern') || undefined,
+
+			// The size of the dot to draw on each point in pixels (see drawPoints). A dot is always drawn when a point is "isolated",
+			// i.e. there is a missing point on either side of it. This also controls the size of those dots.
+			drawPoints: self.data('dygraph-drawpoints') || false,
+
+			// Draw points at the edges of gaps in the data. This improves visibility of small data segments or other data irregularities.
+			drawGapEdgePoints: self.data('dygraph-drawgapedgepoints') || true,
+
+			connectSeparatedPoints: self.data('dygraph-connectseparatedpoints') || false,
+			pointSize: self.data('dygraph-pointsize') || 1,
+
+			// enabling this makes the chart with little square lines
+			stepPlot: self.data('dygraph-stepplot') || false,
+
+			// Draw a border around graph lines to make crossing lines more easily distinguishable. Useful for graphs with many lines.
+			strokeBorderColor: self.data('dygraph-strokebordercolor') || NETDATA.themes.current.background,
+			strokeBorderWidth: self.data('dygraph-strokeborderwidth') || (chart_type === 'stacked')?0.0:0.0,
+
+			fillGraph: self.data('dygraph-fillgraph') || (chart_type === 'area' || chart_type === 'stacked')?true:false,
+			fillAlpha: self.data('dygraph-fillalpha') || (chart_type === 'stacked')?NETDATA.options.current.color_fill_opacity_stacked:NETDATA.options.current.color_fill_opacity_area,
+			stackedGraph: self.data('dygraph-stackedgraph') || (chart_type === 'stacked')?true:false,
+			stackedGraphNaNFill: self.data('dygraph-stackedgraphnanfill') || 'none',
+
+			drawAxis: self.data('dygraph-drawaxis') || true,
+			axisLabelFontSize: self.data('dygraph-axislabelfontsize') || 10,
+			axisLineColor: self.data('dygraph-axislinecolor') || NETDATA.themes.current.axis,
+			axisLineWidth: self.data('dygraph-axislinewidth') || 0.3,
+
+			drawGrid: self.data('dygraph-drawgrid') || true,
+			drawXGrid: self.data('dygraph-drawxgrid') || undefined,
+			drawYGrid: self.data('dygraph-drawygrid') || undefined,
+			gridLinePattern: self.data('dygraph-gridlinepattern') || null,
+			gridLineWidth: self.data('dygraph-gridlinewidth') || 0.3,
+			gridLineColor: self.data('dygraph-gridlinecolor') || NETDATA.themes.current.grid,
+
+			maxNumberWidth: self.data('dygraph-maxnumberwidth') || 8,
+			sigFigs: self.data('dygraph-sigfigs') || null,
+			digitsAfterDecimal: self.data('dygraph-digitsafterdecimal') || 2,
+			valueFormatter: self.data('dygraph-valueformatter') || function(x){ return x.toFixed(2); },
+
+			highlightCircleSize: self.data('dygraph-highlightcirclesize') || highlightCircleSize,
+			highlightSeriesOpts: self.data('dygraph-highlightseriesopts') || null, // TOO SLOW: { strokeWidth: 1.5 },
+			highlightSeriesBackgroundAlpha: self.data('dygraph-highlightseriesbackgroundalpha') || null, // TOO SLOW: (chart_type === 'stacked')?0.7:0.5,
+
+			pointClickCallback: self.data('dygraph-pointclickcallback') || undefined,
+			visibility: state.dimensions_visibility.selected2BooleanArray(state.data.dimension_names),
+			axes: {
+				x: {
+					pixelsPerLabel: 50,
+					ticker: Dygraph.dateTicker,
+					axisLabelFormatter: function (d, gran) {
+						return NETDATA.zeropad(d.getHours()) + ":" + NETDATA.zeropad(d.getMinutes()) + ":" + NETDATA.zeropad(d.getSeconds());
+					},
+					valueFormatter: function (ms) {
+						var d = new Date(ms);
+						return d.toLocaleDateString() + ' ' + d.toLocaleTimeString();
+						// return NETDATA.zeropad(d.getHours()) + ":" + NETDATA.zeropad(d.getMinutes()) + ":" + NETDATA.zeropad(d.getSeconds());
+					}
+				},
+				y: {
+					pixelsPerLabel: 15,
+					valueFormatter: function (x) {
+						// we format legends with the state object
+						// no need to do anything here
+						// return (Math.round(x*100) / 100).toLocaleString();
+						// return state.legendFormatValue(x);
+						return x;
+					}
+				}
+			},
+			legendFormatter: function(data) {
+				var elements = state.element_legend_childs;
+
+				// if the hidden div is not there
+				// we are not managing the legend
+				if(elements.hidden === null) return;
+
+				if (typeof data.x !== 'undefined') {
+					state.legendSetDate(data.x);
+					var i = data.series.length;
+					while(i--) {
+						var series = data.series[i];
+						if(!series.isVisible) continue;
+						state.legendSetLabelValue(series.label, series.y);
+					}
+				}
+
+				return '';
+			},
+			drawCallback: function(dygraph, is_initial) {
+				if(state.current.name !== 'auto' && state.dygraph_user_action === true) {
+					state.dygraph_user_action = false;
+
+					var x_range = dygraph.xAxisRange();
+					var after = Math.round(x_range[0]);
+					var before = Math.round(x_range[1]);
+
+					if(NETDATA.options.debug.dygraph === true)
+						state.log('dygraphDrawCallback(dygraph, ' + is_initial + '): ' + (after / 1000).toString() + ' - ' + (before / 1000).toString());
+
+					if(before <= state.netdata_last && after >= state.netdata_first)
+						state.updateChartPanOrZoom(after, before);
+				}
+			},
+			zoomCallback: function(minDate, maxDate, yRanges) {
+				if(NETDATA.options.debug.dygraph === true)
+					state.log('dygraphZoomCallback()');
+
+				state.globalSelectionSyncStop();
+				state.globalSelectionSyncDelay();
+				state.setMode('zoom');
+
+				// refresh it to the greatest possible zoom level
+				state.dygraph_user_action = true;
+				state.dygraph_force_zoom = true;
+				state.updateChartPanOrZoom(minDate, maxDate);
+			},
+			highlightCallback: function(event, x, points, row, seriesName) {
+				if(NETDATA.options.debug.dygraph === true || state.debug === true)
+					state.log('dygraphHighlightCallback()');
+
+				state.pauseChart();
+
+				// there is a bug in dygraph when the chart is zoomed enough
+				// the time it thinks is selected is wrong
+				// here we calculate the time t based on the row number selected
+				// which is ok
+				var t = state.data_after + row * state.data_update_every;
+				// console.log('row = ' + row + ', x = ' + x + ', t = ' + t + ' ' + ((t === x)?'SAME':(Math.abs(x-t)<=state.data_update_every)?'SIMILAR':'DIFFERENT') + ', rows in db: ' + state.data_points + ' visible(x) = ' + state.timeIsVisible(x) + ' visible(t) = ' + state.timeIsVisible(t) + ' r(x) = ' + state.calculateRowForTime(x) + ' r(t) = ' + state.calculateRowForTime(t) + ' range: ' + state.data_after + ' - ' + state.data_before + ' real: ' + state.data.after + ' - ' + state.data.before + ' every: ' + state.data_update_every);
+
+				state.globalSelectionSync(x);
+
+				// fix legend zIndex using the internal structures of dygraph legend module
+				// this works, but it is a hack!
+				// state.dygraph_instance.plugins_[0].plugin.legend_div_.style.zIndex = 10000;
+			},
+			unhighlightCallback: function(event) {
+				if(NETDATA.options.debug.dygraph === true || state.debug === true)
+					state.log('dygraphUnhighlightCallback()');
+
+				state.unpauseChart();
+				state.globalSelectionSyncStop();
+			},
+			interactionModel : {
+				mousedown: function(event, dygraph, context) {
+					if(NETDATA.options.debug.dygraph === true || state.debug === true)
+						state.log('interactionModel.mousedown()');
+
+					state.dygraph_user_action = true;
+					state.globalSelectionSyncStop();
+
+					if(NETDATA.options.debug.dygraph === true)
+						state.log('dygraphMouseDown()');
+
+					// Right-click should not initiate a zoom.
+					if(event.button && event.button === 2) return;
+
+					context.initializeMouseDown(event, dygraph, context);
+
+					if(event.button && event.button === 1) {
+						if (event.altKey || event.shiftKey) {
+							state.setMode('pan');
+							state.globalSelectionSyncDelay();
+							Dygraph.startPan(event, dygraph, context);
+						}
+						else {
+							state.setMode('zoom');
+							state.globalSelectionSyncDelay();
+							Dygraph.startZoom(event, dygraph, context);
+						}
+					}
+					else {
+						if (event.altKey || event.shiftKey) {
+							state.setMode('zoom');
+							state.globalSelectionSyncDelay();
+							Dygraph.startZoom(event, dygraph, context);
+						}
+						else {
+							state.setMode('pan');
+							state.globalSelectionSyncDelay();
+							Dygraph.startPan(event, dygraph, context);
+						}
+					}
+				},
+				mousemove: function(event, dygraph, context) {
+					if(NETDATA.options.debug.dygraph === true || state.debug === true)
+						state.log('interactionModel.mousemove()');
+
+					if(context.isPanning) {
+						state.dygraph_user_action = true;
+						state.globalSelectionSyncStop();
+						state.globalSelectionSyncDelay();
+						state.setMode('pan');
+						Dygraph.movePan(event, dygraph, context);
+					}
+					else if(context.isZooming) {
+						state.dygraph_user_action = true;
+						state.globalSelectionSyncStop();
+						state.globalSelectionSyncDelay();
+						state.setMode('zoom');
+						Dygraph.moveZoom(event, dygraph, context);
+					}
+				},
+				mouseup: function(event, dygraph, context) {
+					if(NETDATA.options.debug.dygraph === true || state.debug === true)
+						state.log('interactionModel.mouseup()');
+
+					if (context.isPanning) {
+						state.dygraph_user_action = true;
+						state.globalSelectionSyncDelay();
+						Dygraph.endPan(event, dygraph, context);
+					}
+					else if (context.isZooming) {
+						state.dygraph_user_action = true;
+						state.globalSelectionSyncDelay();
+						Dygraph.endZoom(event, dygraph, context);
+					}
+				},
+				click: function(event, dygraph, context) {
+					if(NETDATA.options.debug.dygraph === true || state.debug === true)
+						state.log('interactionModel.click()');
+
+					event.preventDefault();
+				},
+				dblclick: function(event, dygraph, context) {
+					if(NETDATA.options.debug.dygraph === true || state.debug === true)
+						state.log('interactionModel.dblclick()');
+					NETDATA.resetAllCharts(state);
+				},
+				mousewheel: function(event, dygraph, context) {
+					if(NETDATA.options.debug.dygraph === true || state.debug === true)
+						state.log('interactionModel.mousewheel()');
+
+					// Take the offset of a mouse event on the dygraph canvas and
+					// convert it to a pair of percentages from the bottom left. 
+					// (Not top left, bottom is where the lower value is.)
+					function offsetToPercentage(g, offsetX, offsetY) {
+						// This is calculating the pixel offset of the leftmost date.
+						var xOffset = g.toDomCoords(g.xAxisRange()[0], null)[0];
+						var yar0 = g.yAxisRange(0);
+
+						// This is calculating the pixel of the higest value. (Top pixel)
+						var yOffset = g.toDomCoords(null, yar0[1])[1];
+
+						// x y w and h are relative to the corner of the drawing area,
+						// so that the upper corner of the drawing area is (0, 0).
+						var x = offsetX - xOffset;
+						var y = offsetY - yOffset;
+
+						// This is computing the rightmost pixel, effectively defining the
+						// width.
+						var w = g.toDomCoords(g.xAxisRange()[1], null)[0] - xOffset;
+
+						// This is computing the lowest pixel, effectively defining the height.
+						var h = g.toDomCoords(null, yar0[0])[1] - yOffset;
+
+						// Percentage from the left.
+						var xPct = w === 0 ? 0 : (x / w);
+						// Percentage from the top.
+						var yPct = h === 0 ? 0 : (y / h);
+
+						// The (1-) part below changes it from "% distance down from the top"
+						// to "% distance up from the bottom".
+						return [xPct, (1-yPct)];
+					}
+
+					// Adjusts [x, y] toward each other by zoomInPercentage%
+					// Split it so the left/bottom axis gets xBias/yBias of that change and
+					// tight/top gets (1-xBias)/(1-yBias) of that change.
+					//
+					// If a bias is missing it splits it down the middle.
+					function zoomRange(g, zoomInPercentage, xBias, yBias) {
+						xBias = xBias || 0.5;
+						yBias = yBias || 0.5;
+
+						function adjustAxis(axis, zoomInPercentage, bias) {
+							var delta = axis[1] - axis[0];
+							var increment = delta * zoomInPercentage;
+							var foo = [increment * bias, increment * (1-bias)];
+
+							return [ axis[0] + foo[0], axis[1] - foo[1] ];
+						}
+
+						var yAxes = g.yAxisRanges();
+						var newYAxes = [];
+						for (var i = 0; i < yAxes.length; i++) {
+							newYAxes[i] = adjustAxis(yAxes[i], zoomInPercentage, yBias);
+						}
+
+						return adjustAxis(g.xAxisRange(), zoomInPercentage, xBias);
+					}
+
+					if(event.altKey || event.shiftKey) {
+						state.dygraph_user_action = true;
+
+						state.globalSelectionSyncStop();
+						state.globalSelectionSyncDelay();
+
+						// http://dygraphs.com/gallery/interaction-api.js
+						var normal = (event.detail) ? event.detail * -1 : event.wheelDelta / 40;
+						var percentage = normal / 50;
+
+						if (!(event.offsetX && event.offsetY)){
+							event.offsetX = event.layerX - event.target.offsetLeft;
+							event.offsetY = event.layerY - event.target.offsetTop;
+						}
+
+						var percentages = offsetToPercentage(dygraph, event.offsetX, event.offsetY);
+						var xPct = percentages[0];
+						var yPct = percentages[1];
+
+						var new_x_range = zoomRange(dygraph, percentage, xPct, yPct);
+
+						var after = new_x_range[0];
+						var before = new_x_range[1];
+
+						var first = state.netdata_first + state.data_update_every;
+						var last = state.netdata_last + state.data_update_every;
+
+						if(before > last) {
+							after -= (before - last);
+							before = last;
+						}
+						if(after < first) {
+							after = first;
+						}
+
+						state.setMode('zoom');
+						if(state.updateChartPanOrZoom(after, before) === true)
+							dygraph.updateOptions({ dateWindow: [ after, before ] });
+
+						event.preventDefault();
+					}
+				},
+				touchstart: function(event, dygraph, context) {
+					if(NETDATA.options.debug.dygraph === true || state.debug === true)
+						state.log('interactionModel.touchstart()');
+
+					state.dygraph_user_action = true;
+					state.setMode('zoom');
+					state.pauseChart();
+
+					Dygraph.defaultInteractionModel.touchstart(event, dygraph, context);
+
+					// we overwrite the touch directions at the end, to overwrite
+					// the internal default of dygraphs
+					context.touchDirections = { x: true, y: false };
+
+					state.dygraph_last_touch_start = new Date().getTime();
+					state.dygraph_last_touch_move = 0;
+
+					if(typeof event.touches[0].pageX === 'number')
+						state.dygraph_last_touch_page_x = event.touches[0].pageX;
+					else
+						state.dygraph_last_touch_page_x = 0;
+				},
+				touchmove: function(event, dygraph, context) {
+					if(NETDATA.options.debug.dygraph === true || state.debug === true)
+						state.log('interactionModel.touchmove()');
+
+					state.dygraph_user_action = true;
+					Dygraph.defaultInteractionModel.touchmove(event, dygraph, context);
+
+					state.dygraph_last_touch_move = new Date().getTime();
+				},
+				touchend: function(event, dygraph, context) {
+					if(NETDATA.options.debug.dygraph === true || state.debug === true)
+						state.log('interactionModel.touchend()');
+
+					state.dygraph_user_action = true;
+					Dygraph.defaultInteractionModel.touchend(event, dygraph, context);
+
+					// if it didn't move, it is a selection
+					if(state.dygraph_last_touch_move === 0 && state.dygraph_last_touch_page_x !== 0) {
+						// internal api of dygraphs
+						var pct = (state.dygraph_last_touch_page_x - (dygraph.plotter_.area.x + state.element.getBoundingClientRect().left)) / dygraph.plotter_.area.w;
+						var t = Math.round(state.data_after + (state.data_before - state.data_after) * pct);
+						if(NETDATA.dygraphSetSelection(state, t) === true)
+							state.globalSelectionSync(t);
+					}
+
+					// if it was double tap within double click time, reset the charts
+					var now = new Date().getTime();
+					if(typeof state.dygraph_last_touch_end !== 'undefined') {
+						if(state.dygraph_last_touch_move === 0) {
+							var dt = now - state.dygraph_last_touch_end;
+							if(dt <= NETDATA.options.current.double_click_speed)
+								NETDATA.resetAllCharts(state);
+						}
+					}
+
+					// remember the timestamp of the last touch end
+					state.dygraph_last_touch_end = now;
+				}
+			}
+		};
+
+		if(NETDATA.chartLibraries.dygraph.isSparkline(state)) {
+			state.dygraph_options.drawGrid = false;
+			state.dygraph_options.drawAxis = false;
+			state.dygraph_options.title = undefined;
+			state.dygraph_options.units = undefined;
+			state.dygraph_options.ylabel = undefined;
+			state.dygraph_options.yLabelWidth = 0;
+			state.dygraph_options.labelsDivWidth = 120;
+			state.dygraph_options.labelsDivStyles.width = '120px';
+			state.dygraph_options.labelsSeparateLines = true;
+			state.dygraph_options.rightGap = 0;
+		}
+
+		if(smooth === true) {
+			state.dygraph_smooth_eligible = true;
+
+			if(NETDATA.options.current.smooth_plot === true)
+				state.dygraph_options.plotter = smoothPlotter;
+		}
+		else state.dygraph_smooth_eligible = false;
+
+		state.dygraph_instance = new Dygraph(state.element_chart,
+			data.result.data, state.dygraph_options);
+
+		state.dygraph_force_zoom = false;
+		state.dygraph_user_action = false;
+		state.dygraph_last_rendered = new Date().getTime();
+		return true;
+	};
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// morris
+
+	NETDATA.morrisInitialize = function(callback) {
+		if(typeof netdataNoMorris === 'undefined' || !netdataNoMorris) {
+
+			// morris requires raphael
+			if(!NETDATA.chartLibraries.raphael.initialized) {
+				if(NETDATA.chartLibraries.raphael.enabled) {
+					NETDATA.raphaelInitialize(function() {
+						NETDATA.morrisInitialize(callback);
+					});
+				}
+				else {
+					NETDATA.chartLibraries.morris.enabled = false;
+					if(typeof callback === "function")
+						callback();
+				}
+			}
+			else {
+				NETDATA._loadCSS(NETDATA.morris_css);
+
+				$.ajax({
+					url: NETDATA.morris_js,
+					cache: true,
+					dataType: "script"
+				})
+				.done(function() {
+					NETDATA.registerChartLibrary('morris', NETDATA.morris_js);
+				})
+				.fail(function() {
+					NETDATA.chartLibraries.morris.enabled = false;
+					NETDATA.error(100, NETDATA.morris_js);
+				})
+				.always(function() {
+					if(typeof callback === "function")
+						callback();
+				});
+			}
+		}
+		else {
+			NETDATA.chartLibraries.morris.enabled = false;
+			if(typeof callback === "function")
+				callback();
+		}
+	};
+
+	NETDATA.morrisChartUpdate = function(state, data) {
+		state.morris_instance.setData(data.result.data);
+		return true;
+	};
+
+	NETDATA.morrisChartCreate = function(state, data) {
+
+		state.morris_options = {
+				element: state.element_chart.id,
+				data: data.result.data,
+				xkey: 'time',
+				ykeys: data.dimension_names,
+				labels: data.dimension_names,
+				lineWidth: 2,
+				pointSize: 3,
+				smooth: true,
+				hideHover: 'auto',
+				parseTime: true,
+				continuousLine: false,
+				behaveLikeLine: false
+		};
+
+		if(state.chart.chart_type === 'line')
+			state.morris_instance = new Morris.Line(state.morris_options);
+
+		else if(state.chart.chart_type === 'area') {
+			state.morris_options.behaveLikeLine = true;
+			state.morris_instance = new Morris.Area(state.morris_options);
+		}
+		else // stacked
+			state.morris_instance = new Morris.Area(state.morris_options);
+		
+		return true;
+	};
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// raphael
+
+	NETDATA.raphaelInitialize = function(callback) {
+		if(typeof netdataStopRaphael === 'undefined' || !netdataStopRaphael) {
+			$.ajax({
+				url: NETDATA.raphael_js,
+				cache: true,
+				dataType: "script"
+			})
+			.done(function() {
+				NETDATA.registerChartLibrary('raphael', NETDATA.raphael_js);
+			})
+			.fail(function() {
+				NETDATA.chartLibraries.raphael.enabled = false;
+				NETDATA.error(100, NETDATA.raphael_js);
+			})
+			.always(function() {
+				if(typeof callback === "function")
+					callback();
+			});
+		}
+		else {
+			NETDATA.chartLibraries.raphael.enabled = false;
+			if(typeof callback === "function")
+				callback();
+		}
+	};
+
+	NETDATA.raphaelChartUpdate = function(state, data) {
+		$(state.element_chart).raphael(data.result, {
+			width: state.chartWidth(),
+			height: state.chartHeight()
+		});
+
+		return false;
+	};
+
+	NETDATA.raphaelChartCreate = function(state, data) {
+		$(state.element_chart).raphael(data.result, {
+			width: state.chartWidth(),
+			height: state.chartHeight()
+		});
+
+		return false;
+	};
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// C3
+
+	NETDATA.c3Initialize = function(callback) {
+		if(typeof netdataNoC3 === 'undefined' || !netdataNoC3) {
+
+			// C3 requires D3
+			if(!NETDATA.chartLibraries.d3.initialized) {
+				if(NETDATA.chartLibraries.d3.enabled) {
+					NETDATA.d3Initialize(function() {
+						NETDATA.c3Initialize(callback);
+					});
+				}
+				else {
+					NETDATA.chartLibraries.c3.enabled = false;
+					if(typeof callback === "function")
+						callback();
+				}
+			}
+			else {
+				NETDATA._loadCSS(NETDATA.c3_css);
+
+				$.ajax({
+					url: NETDATA.c3_js,
+					cache: true,
+					dataType: "script"
+				})
+				.done(function() {
+					NETDATA.registerChartLibrary('c3', NETDATA.c3_js);
+				})
+				.fail(function() {
+					NETDATA.chartLibraries.c3.enabled = false;
+					NETDATA.error(100, NETDATA.c3_js);
+				})
+				.always(function() {
+					if(typeof callback === "function")
+						callback();
+				});
+			}
+		}
+		else {
+			NETDATA.chartLibraries.c3.enabled = false;
+			if(typeof callback === "function")
+				callback();
+		}
+	};
+
+	NETDATA.c3ChartUpdate = function(state, data) {
+		state.c3_instance.destroy();
+		return NETDATA.c3ChartCreate(state, data);
+
+		//state.c3_instance.load({
+		//	rows: data.result,
+		//	unload: true
+		//});
+
+		//return true;
+	};
+
+	NETDATA.c3ChartCreate = function(state, data) {
+
+		state.element_chart.id = 'c3-' + state.uuid;
+		// console.log('id = ' + state.element_chart.id);
+
+		state.c3_instance = c3.generate({
+			bindto: '#' + state.element_chart.id,
+			size: {
+				width: state.chartWidth(),
+				height: state.chartHeight()
+			},
+			color: {
+				pattern: state.chartColors()
+			},
+			data: {
+				x: 'time',
+				rows: data.result,
+				type: (state.chart.chart_type === 'line')?'spline':'area-spline'
+			},
+			axis: {
+				x: {
+					type: 'timeseries',
+					tick: {
+						format: function(x) {
+							return NETDATA.zeropad(x.getHours()) + ":" + NETDATA.zeropad(x.getMinutes()) + ":" + NETDATA.zeropad(x.getSeconds());
+						}
+					}
+				}
+			},
+			grid: {
+				x: {
+					show: true
+				},
+				y: {
+					show: true
+				}
+			},
+			point: {
+				show: false
+			},
+			line: {
+				connectNull: false
+			},
+			transition: {
+				duration: 0
+			},
+			interaction: {
+				enabled: true
+			}
+		});
+
+		// console.log(state.c3_instance);
+
+		return true;
+	};
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// D3
+
+	NETDATA.d3Initialize = function(callback) {
+		if(typeof netdataStopD3 === 'undefined' || !netdataStopD3) {
+			$.ajax({
+				url: NETDATA.d3_js,
+				cache: true,
+				dataType: "script"
+			})
+			.done(function() {
+				NETDATA.registerChartLibrary('d3', NETDATA.d3_js);
+			})
+			.fail(function() {
+				NETDATA.chartLibraries.d3.enabled = false;
+				NETDATA.error(100, NETDATA.d3_js);
+			})
+			.always(function() {
+				if(typeof callback === "function")
+					callback();
+			});
+		}
+		else {
+			NETDATA.chartLibraries.d3.enabled = false;
+			if(typeof callback === "function")
+				callback();
+		}
+	};
+
+	NETDATA.d3ChartUpdate = function(state, data) {
+		return false;
+	};
+
+	NETDATA.d3ChartCreate = function(state, data) {
+		return false;
+	};
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// google charts
+
+	NETDATA.googleInitialize = function(callback) {
+		if(typeof netdataNoGoogleCharts === 'undefined' || !netdataNoGoogleCharts) {
+			$.ajax({
+				url: NETDATA.google_js,
+				cache: true,
+				dataType: "script"
+			})
+			.done(function() {
+				NETDATA.registerChartLibrary('google', NETDATA.google_js);
+				google.load('visualization', '1.1', {
+					'packages': ['corechart', 'controls'],
+					'callback': callback
+				});
+			})
+			.fail(function() {
+				NETDATA.chartLibraries.google.enabled = false;
+				NETDATA.error(100, NETDATA.google_js);
+				if(typeof callback === "function")
+					callback();
+			});
+		}
+		else {
+			NETDATA.chartLibraries.google.enabled = false;
+			if(typeof callback === "function")
+				callback();
+		}
+	};
+
+	NETDATA.googleChartUpdate = function(state, data) {
+		var datatable = new google.visualization.DataTable(data.result);
+		state.google_instance.draw(datatable, state.google_options);
+		return true;
+	};
+
+	NETDATA.googleChartCreate = function(state, data) {
+		var datatable = new google.visualization.DataTable(data.result);
+
+		state.google_options = {
+			colors: state.chartColors(),
+
+			// do not set width, height - the chart resizes itself
+			//width: state.chartWidth(),
+			//height: state.chartHeight(),
+			lineWidth: 1,
+			title: state.title,
+			fontSize: 11,
+			hAxis: {
+			//	title: "Time of Day",
+			//	format:'HH:mm:ss',
+				viewWindowMode: 'maximized',
+				slantedText: false,
+				format:'HH:mm:ss',
+				textStyle: {
+					fontSize: 9
+				},
+				gridlines: {
+					color: '#EEE'
+				}
+			},
+			vAxis: {
+				title: state.units,
+				viewWindowMode: 'pretty',
+				minValue: -0.1,
+				maxValue: 0.1,
+				direction: 1,
+				textStyle: {
+					fontSize: 9
+				},
+				gridlines: {
+					color: '#EEE'
+				}
+			},
+			chartArea: {
+				width: '65%',
+				height: '80%'
+			},
+			focusTarget: 'category',
+			annotation: {
+				'1': {
+					style: 'line'
+				}
+			},
+			pointsVisible: 0,
+			titlePosition: 'out',
+			titleTextStyle: {
+				fontSize: 11
+			},
+			tooltip: {
+				isHtml: false,
+				ignoreBounds: true,
+				textStyle: {
+					fontSize: 9
+				}
+			},
+			curveType: 'function',
+			areaOpacity: 0.3,
+			isStacked: false
+		};
+
+		switch(state.chart.chart_type) {
+			case "area":
+				state.google_options.vAxis.viewWindowMode = 'maximized';
+				state.google_options.areaOpacity = NETDATA.options.current.color_fill_opacity_area;
+				state.google_instance = new google.visualization.AreaChart(state.element_chart);
+				break;
+
+			case "stacked":
+				state.google_options.isStacked = true;
+				state.google_options.areaOpacity = NETDATA.options.current.color_fill_opacity_stacked;
+				state.google_options.vAxis.viewWindowMode = 'maximized';
+				state.google_options.vAxis.minValue = null;
+				state.google_options.vAxis.maxValue = null;
+				state.google_instance = new google.visualization.AreaChart(state.element_chart);
+				break;
+
+			default:
+			case "line":
+				state.google_options.lineWidth = 2;
+				state.google_instance = new google.visualization.LineChart(state.element_chart);
+				break;
+		}
+
+		state.google_instance.draw(datatable, state.google_options);
+		return true;
+	};
+
+	// ----------------------------------------------------------------------------------------------------------------
+
+	NETDATA.percentFromValueMax = function(value, max) {
+		if(value === null) value = 0;
+		if(max < value) max = value;
+		
+		var pcent = 0;
+		if(max !== 0) {
+			pcent = Math.round(value * 100 / max);
+			if(pcent === 0 && value > 0) pcent = 1;
+		}
+
+		return pcent;
+	}
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// easy-pie-chart
+
+	NETDATA.easypiechartInitialize = function(callback) {
+		if(typeof netdataNoEasyPieChart === 'undefined' || !netdataNoEasyPieChart) {
+			$.ajax({
+				url: NETDATA.easypiechart_js,
+				cache: true,
+				dataType: "script"
+			})
+				.done(function() {
+					NETDATA.registerChartLibrary('easypiechart', NETDATA.easypiechart_js);
+				})
+				.fail(function() {
+					NETDATA.chartLibraries.easypiechart.enabled = false;
+					NETDATA.error(100, NETDATA.easypiechart_js);
+				})
+				.always(function() {
+					if(typeof callback === "function")
+						callback();
+				})
+		}
+		else {
+			NETDATA.chartLibraries.easypiechart.enabled = false;
+			if(typeof callback === "function")
+				callback();
+		}
+	};
+
+	NETDATA.easypiechartClearSelection = function(state) {
+		if(typeof state.easyPieChartEvent !== 'undefined') {
+			if(state.easyPieChartEvent.timer !== null)
+				clearTimeout(state.easyPieChartEvent.timer);
+
+			state.easyPieChartEvent.timer = null;
+		}
+
+		if(state.isAutoRefreshed() === true && state.data !== null) {
+			NETDATA.easypiechartChartUpdate(state, state.data);
+		}
+		else {
+			state.easyPieChartLabel.innerHTML = state.legendFormatValue(null);
+			state.easyPieChart_instance.update(0);
+		}
+		state.easyPieChart_instance.enableAnimation();
+
+		return true;
+	};
+
+	NETDATA.easypiechartSetSelection = function(state, t) {
+		if(state.timeIsVisible(t) !== true)
+			return NETDATA.easypiechartClearSelection(state);
+
+		var slot = state.calculateRowForTime(t);
+		if(slot < 0 || slot >= state.data.result.length)
+			return NETDATA.easypiechartClearSelection(state);
+
+		if(typeof state.easyPieChartEvent === 'undefined') {
+			state.easyPieChartEvent = {
+				timer: null,
+				value: 0,
+				pcent: 0,
+			};
+		}
+
+		var value = state.data.result[state.data.result.length - 1 - slot];
+		var max = (state.easyPieChartMax === null)?state.data.max:state.easyPieChartMax;
+		var pcent = NETDATA.percentFromValueMax(value, max);
+
+		state.easyPieChartEvent.value = value;
+		state.easyPieChartEvent.pcent = pcent;
+		state.easyPieChartLabel.innerHTML = state.legendFormatValue(value);
+
+		if(state.easyPieChartEvent.timer === null) {
+			state.easyPieChart_instance.disableAnimation();
+
+			state.easyPieChartEvent.timer = setTimeout(function() {
+				state.easyPieChartEvent.timer = null;
+				state.easyPieChart_instance.update(state.easyPieChartEvent.pcent);
+			}, NETDATA.options.current.charts_selection_animation_delay);
+		}
+
+		return true;
+	};
+
+	NETDATA.easypiechartChartUpdate = function(state, data) {
+		var value, max, pcent;
+
+		if(NETDATA.globalPanAndZoom.isActive() === true || state.isAutoRefreshed() === false) {
+			value = null;
+			max = 0;
+			pcent = 0;
+		}
+		else {
+			value = data.result[0];
+			max = (state.easyPieChartMax === null)?data.max:state.easyPieChartMax;
+			pcent = NETDATA.percentFromValueMax(value, max);
+		}
+
+		state.easyPieChartLabel.innerHTML = state.legendFormatValue(value);
+		state.easyPieChart_instance.update(pcent);
+		return true;
+	};
+
+	NETDATA.easypiechartChartCreate = function(state, data) {
+		var self = $(state.element);
+		var chart = $(state.element_chart);
+
+		var value = data.result[0];
+		var max = self.data('easypiechart-max-value') || null;
+		var adjust = self.data('easypiechart-adjust') || null;
+		
+		if(max === null) {
+			max = data.max;
+			state.easyPieChartMax = null;
+		}
+		else
+			state.easyPieChartMax = max;
+
+		var pcent = NETDATA.percentFromValueMax(value, max);
+
+		chart.data('data-percent', pcent);
+
+		var size;
+		switch(adjust) {
+			case 'width': size = state.chartHeight(); break;
+			case 'min': size = Math.min(state.chartWidth(), state.chartHeight()); break;
+			case 'max': size = Math.max(state.chartWidth(), state.chartHeight()); break;
+			case 'height':
+			default: size = state.chartWidth(); break;
+		}
+		state.element.style.width = size + 'px';
+		state.element.style.height = size + 'px';
+
+		var stroke = Math.floor(size / 22);
+		if(stroke < 3) stroke = 2;
+
+		var valuefontsize = Math.floor((size * 2 / 3) / 5);
+		var valuetop = Math.round((size - valuefontsize - (size / 40)) / 2);
+		state.easyPieChartLabel = document.createElement('span');
+		state.easyPieChartLabel.className = 'easyPieChartLabel';
+		state.easyPieChartLabel.innerHTML = state.legendFormatValue(value);
+		state.easyPieChartLabel.style.fontSize = valuefontsize + 'px';
+		state.easyPieChartLabel.style.top = valuetop.toString() + 'px';
+		state.element_chart.appendChild(state.easyPieChartLabel);
+
+		var titlefontsize = Math.round(valuefontsize * 1.6 / 3);
+		var titletop = Math.round(valuetop - (titlefontsize * 2) - (size / 40));
+		state.easyPieChartTitle = document.createElement('span');
+		state.easyPieChartTitle.className = 'easyPieChartTitle';
+		state.easyPieChartTitle.innerHTML = state.title;
+		state.easyPieChartTitle.style.fontSize = titlefontsize + 'px';
+		state.easyPieChartTitle.style.lineHeight = titlefontsize + 'px';
+		state.easyPieChartTitle.style.top = titletop.toString() + 'px';
+		state.element_chart.appendChild(state.easyPieChartTitle);
+
+		var unitfontsize = Math.round(titlefontsize * 0.9);
+		var unittop = Math.round(valuetop + (valuefontsize + unitfontsize) + (size / 40));
+		state.easyPieChartUnits = document.createElement('span');
+		state.easyPieChartUnits.className = 'easyPieChartUnits';
+		state.easyPieChartUnits.innerHTML = state.units;
+		state.easyPieChartUnits.style.fontSize = unitfontsize + 'px';
+		state.easyPieChartUnits.style.top = unittop.toString() + 'px';
+		state.element_chart.appendChild(state.easyPieChartUnits);
+
+		chart.easyPieChart({
+			barColor: self.data('easypiechart-barcolor') || state.chartColors()[0], //'#ef1e25',
+			trackColor: self.data('easypiechart-trackcolor') || NETDATA.themes.current.easypiechart_track,
+			scaleColor: self.data('easypiechart-scalecolor') || NETDATA.themes.current.easypiechart_scale,
+			scaleLength: self.data('easypiechart-scalelength') || 5,
+			lineCap: self.data('easypiechart-linecap') || 'round',
+			lineWidth: self.data('easypiechart-linewidth') || stroke,
+			trackWidth: self.data('easypiechart-trackwidth') || undefined,
+			size: self.data('easypiechart-size') || size,
+			rotate: self.data('easypiechart-rotate') || 0,
+			animate: self.data('easypiechart-rotate') || {duration: 500, enabled: true},
+			easing: self.data('easypiechart-easing') || undefined
+		});
+		
+		// when we just re-create the chart
+		// do not animate the first update
+		var animate = true;
+		if(typeof state.easyPieChart_instance !== 'undefined')
+			animate = false;
+
+		state.easyPieChart_instance = chart.data('easyPieChart');
+		if(animate === false) state.easyPieChart_instance.disableAnimation();
+		state.easyPieChart_instance.update(pcent);
+		if(animate === false) state.easyPieChart_instance.enableAnimation();
+		return true;
+	};
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// gauge.js
+
+	NETDATA.gaugeInitialize = function(callback) {
+		if(typeof netdataNoGauge === 'undefined' || !netdataNoGauge) {
+			$.ajax({
+				url: NETDATA.gauge_js,
+				cache: true,
+				dataType: "script"
+			})
+				.done(function() {
+					NETDATA.registerChartLibrary('gauge', NETDATA.gauge_js);
+				})
+				.fail(function() {
+					NETDATA.chartLibraries.gauge.enabled = false;
+					NETDATA.error(100, NETDATA.gauge_js);
+				})
+				.always(function() {
+					if(typeof callback === "function")
+						callback();
+				})
+		}
+		else {
+			NETDATA.chartLibraries.gauge.enabled = false;
+			if(typeof callback === "function")
+				callback();
+		}
+	};
+
+	NETDATA.gaugeAnimation = function(state, status) {
+		var speed = 32;
+
+		if(typeof status === 'boolean' && status === false)
+			speed = 1000000000;
+		else if(typeof status === 'number')
+			speed = status;
+		
+		state.gauge_instance.animationSpeed = speed;
+		state.___gaugeOld__.speed = speed;
+	}
+
+	NETDATA.gaugeSet = function(state, value, min, max) {
+		if(typeof value !== 'number') value = 0;
+		if(typeof min !== 'number') min = 0;
+		if(typeof max !== 'number') max = 0;
+		if(value > max) max = value;
+		if(value < min) min = value;
+		if(min > max) {
+			var t = min;
+			min = max;
+			max = t;
+		}
+		else if(min == max)
+			max = min + 1;
+
+		// gauge.js has an issue if the needle
+		// is smaller than min or larger than max
+		// when we set the new values
+		// the needle will go crazy
+
+		// to prevent it, we always feed it
+		// with a percentage, so that the needle
+		// is always between min and max
+		var pcent = (value - min) * 100 / (max - min);
+
+		// these should never happen
+		if(pcent < 0) pcent = 0;
+		if(pcent > 100) pcent = 100;
+
+		state.gauge_instance.set(pcent);
+
+		state.___gaugeOld__.value = value;
+		state.___gaugeOld__.min = min;
+		state.___gaugeOld__.max = max;
+	};
+
+	NETDATA.gaugeSetLabels = function(state, value, min, max) {
+		if(state.___gaugeOld__.valueLabel !== value) {
+			state.___gaugeOld__.valueLabel = value;
+			state.gaugeChartLabel.innerHTML = state.legendFormatValue(value);
+		}
+		if(state.___gaugeOld__.minLabel !== min) {
+			state.___gaugeOld__.minLabel = min;
+			state.gaugeChartMin.innerHTML = state.legendFormatValue(min);
+		}
+		if(state.___gaugeOld__.maxLabel !== max) {
+			state.___gaugeOld__.maxLabel = max;
+			state.gaugeChartMax.innerHTML = state.legendFormatValue(max);
+		}
+	};
+
+	NETDATA.gaugeClearSelection = function(state) {
+		if(typeof state.gaugeEvent !== 'undefined') {
+			if(state.gaugeEvent.timer !== null)
+				clearTimeout(state.gaugeEvent.timer);
+
+			state.gaugeEvent.timer = null;
+		}
+
+		if(state.isAutoRefreshed() === true && state.data !== null) {
+			NETDATA.gaugeChartUpdate(state, state.data);
+		}
+		else {
+			NETDATA.gaugeAnimation(state, false);
+			NETDATA.gaugeSet(state, null, null, null);
+			NETDATA.gaugeSetLabels(state, null, null, null);
+		}
+
+		NETDATA.gaugeAnimation(state, true);
+		return true;
+	};
+
+	NETDATA.gaugeSetSelection = function(state, t) {
+		if(state.timeIsVisible(t) !== true)
+			return NETDATA.gaugeClearSelection(state);
+
+		var slot = state.calculateRowForTime(t);
+		if(slot < 0 || slot >= state.data.result.length)
+			return NETDATA.gaugeClearSelection(state);
+
+		if(typeof state.gaugeEvent === 'undefined') {
+			state.gaugeEvent = {
+				timer: null,
+				value: 0,
+				min: 0,
+				max: 0
+			};
+		}
+
+		var value = state.data.result[state.data.result.length - 1 - slot];
+		var max = (state.gaugeMax === null)?state.data.max:state.gaugeMax;
+		var min = 0;
+
+		state.gaugeEvent.value = value;
+		state.gaugeEvent.max = max;
+		state.gaugeEvent.min = min;
+		NETDATA.gaugeSetLabels(state, value, min, max);
+
+		if(state.gaugeEvent.timer === null) {
+			NETDATA.gaugeAnimation(state, false);
+
+			state.gaugeEvent.timer = setTimeout(function() {
+				state.gaugeEvent.timer = null;
+				NETDATA.gaugeSet(state, state.gaugeEvent.value, state.gaugeEvent.min, state.gaugeEvent.max);
+			}, NETDATA.options.current.charts_selection_animation_delay);
+		}
+
+		return true;
+	};
+
+	NETDATA.gaugeChartUpdate = function(state, data) {
+		var value, min, max;
+
+		if(NETDATA.globalPanAndZoom.isActive() === true || state.isAutoRefreshed() === false) {
+			value = 0;
+			min = 0;
+			max = 1;
+			NETDATA.gaugeSetLabels(state, null, null, null);
+		}
+		else {
+			value = data.result[0];
+			min = 0;
+			max = (state.gaugeMax === null)?data.max:state.gaugeMax;
+			if(value > max) max = value;
+			NETDATA.gaugeSetLabels(state, value, min, max);
+		}
+
+		NETDATA.gaugeSet(state, value, min, max);
+		return true;
+	};
+
+	NETDATA.gaugeChartCreate = function(state, data) {
+		var self = $(state.element);
+		var chart = $(state.element_chart);
+
+		var value = data.result[0];
+		var max = self.data('gauge-max-value') || null;
+		var adjust = self.data('gauge-adjust') || null;
+		var pointerColor = self.data('gauge-pointer-color') || NETDATA.themes.current.gauge_pointer;
+		var strokeColor = self.data('gauge-stroke-color') || NETDATA.themes.current.gauge_stroke;
+		var startColor = self.data('gauge-start-color') || state.chartColors()[0];
+		var stopColor = self.data('gauge-stop-color') || void 0;
+		var generateGradient = self.data('gauge-generate-gradient') || false;
+
+		if(max === null) {
+			max = data.max;
+			state.gaugeMax = null;
+		}
+		else
+			state.gaugeMax = max;
+
+		var width = state.chartWidth(), height = state.chartHeight(); //, ratio = 1.5;
+		//switch(adjust) {
+		//	case 'width': width = height * ratio; break;
+		//	case 'height':
+		//	default: height = width / ratio; break;
+		//}
+		//state.element.style.width = width.toString() + 'px';
+		//state.element.style.height = height.toString() + 'px';
+
+		var lum_d = 0.05;
+
+		var options = {
+			lines: 12,					// The number of lines to draw
+			angle: 0.15,				// The length of each line
+			lineWidth: 0.44,			// 0.44 The line thickness
+			pointer: {
+				length: 0.8,			// 0.9 The radius of the inner circle
+				strokeWidth: 0.035,		// The rotation offset
+				color: pointerColor		// Fill color
+			},
+			colorStart: startColor,		// Colors
+			colorStop: stopColor,		// just experiment with them
+			strokeColor: strokeColor,	// to see which ones work best for you
+			limitMax: true,
+			generateGradient: generateGradient,
+			gradientType: 0
+		};
+
+		if(generateGradient === false && NETDATA.themes.current.gauge_gradient === true) {
+			options.percentColors = [
+				[0.0, NETDATA.colorLuminance(startColor, (lum_d * 10) - (lum_d * 0))],
+				[0.1, NETDATA.colorLuminance(startColor, (lum_d * 10) - (lum_d * 1))],
+				[0.2, NETDATA.colorLuminance(startColor, (lum_d * 10) - (lum_d * 2))],
+				[0.3, NETDATA.colorLuminance(startColor, (lum_d * 10) - (lum_d * 3))],
+				[0.4, NETDATA.colorLuminance(startColor, (lum_d * 10) - (lum_d * 4))],
+				[0.5, NETDATA.colorLuminance(startColor, (lum_d * 10) - (lum_d * 5))],
+				[0.6, NETDATA.colorLuminance(startColor, (lum_d * 10) - (lum_d * 6))],
+				[0.7, NETDATA.colorLuminance(startColor, (lum_d * 10) - (lum_d * 7))],
+				[0.8, NETDATA.colorLuminance(startColor, (lum_d * 10) - (lum_d * 8))],
+				[0.9, NETDATA.colorLuminance(startColor, (lum_d * 10) - (lum_d * 9))],
+				[1.0, NETDATA.colorLuminance(startColor, 0.0)]];
+		}
+
+		state.gauge_canvas = document.createElement('canvas');
+		state.gauge_canvas.id = 'gauge-' + state.uuid + '-canvas';
+		state.gauge_canvas.className = 'gaugeChart';
+		state.gauge_canvas.width  = width;
+		state.gauge_canvas.height = height;
+		state.element_chart.appendChild(state.gauge_canvas);
+
+		var valuefontsize = Math.floor(height / 6);
+		var valuetop = Math.round((height - valuefontsize - (height / 6)) / 2);
+		state.gaugeChartLabel = document.createElement('span');
+		state.gaugeChartLabel.className = 'gaugeChartLabel';
+		state.gaugeChartLabel.style.fontSize = valuefontsize + 'px';
+		state.gaugeChartLabel.style.top = valuetop.toString() + 'px';
+		state.element_chart.appendChild(state.gaugeChartLabel);
+
+		var titlefontsize = Math.round(valuefontsize / 2);
+		var titletop = 0;
+		state.gaugeChartTitle = document.createElement('span');
+		state.gaugeChartTitle.className = 'gaugeChartTitle';
+		state.gaugeChartTitle.innerHTML = state.title;
+		state.gaugeChartTitle.style.fontSize = titlefontsize + 'px';
+		state.gaugeChartTitle.style.lineHeight = titlefontsize + 'px';
+		state.gaugeChartTitle.style.top = titletop.toString() + 'px';
+		state.element_chart.appendChild(state.gaugeChartTitle);
+
+		var unitfontsize = Math.round(titlefontsize * 0.9);
+		state.gaugeChartUnits = document.createElement('span');
+		state.gaugeChartUnits.className = 'gaugeChartUnits';
+		state.gaugeChartUnits.innerHTML = state.units;
+		state.gaugeChartUnits.style.fontSize = unitfontsize + 'px';
+		state.element_chart.appendChild(state.gaugeChartUnits);
+
+		state.gaugeChartMin = document.createElement('span');
+		state.gaugeChartMin.className = 'gaugeChartMin';
+		state.gaugeChartMin.style.fontSize = Math.round(valuefontsize * 0.75).toString() + 'px';
+		state.element_chart.appendChild(state.gaugeChartMin);
+
+		state.gaugeChartMax = document.createElement('span');
+		state.gaugeChartMax.className = 'gaugeChartMax';
+		state.gaugeChartMax.style.fontSize = Math.round(valuefontsize * 0.75).toString() + 'px';
+		state.element_chart.appendChild(state.gaugeChartMax);
+
+		// when we just re-create the chart
+		// do not animate the first update
+		var animate = true;
+		if(typeof state.gauge_instance !== 'undefined')
+			animate = false;
+
+		state.gauge_instance = new Gauge(state.gauge_canvas).setOptions(options); // create sexy gauge!
+
+		state.___gaugeOld__ = {
+			value: value,
+			min: 0,
+			max: max,
+			valueLabel: null,
+			minLabel: null,
+			maxLabel: null
+		};
+		
+		// we will always feed a percentage
+		state.gauge_instance.minValue = 0;
+		state.gauge_instance.maxValue = 100;
+
+		NETDATA.gaugeAnimation(state, animate);
+		NETDATA.gaugeSet(state, value, 0, max);
+		NETDATA.gaugeSetLabels(state, value, 0, max);
+		NETDATA.gaugeAnimation(state, true);
+		return true;
+	};
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// Charts Libraries Registration
+
+	NETDATA.chartLibraries = {
+		"dygraph": {
+			initialize: NETDATA.dygraphInitialize,
+			create: NETDATA.dygraphChartCreate,
+			update: NETDATA.dygraphChartUpdate,
+			resize: function(state) {
+				if(typeof state.dygraph_instance.resize === 'function')
+					state.dygraph_instance.resize();
+			},
+			setSelection: NETDATA.dygraphSetSelection,
+			clearSelection:  NETDATA.dygraphClearSelection,
+			initialized: false,
+			enabled: true,
+			format: function(state) { return 'json'; },
+			options: function(state) { return 'ms|flip'; },
+			legend: function(state) {
+				if(this.isSparkline(state) === false)
+					return 'right-side';
+				else
+					return null;
+			},
+			autoresize: function(state) { return true; },
+			max_updates_to_recreate: function(state) { return 5000; },
+			track_colors: function(state) { return true; },
+			pixels_per_point: function(state) {
+				if(this.isSparkline(state) === false)
+					return 3;
+				else
+					return 2;
+			},
+
+			isSparkline: function(state) {
+				if(typeof state.dygraph_sparkline === 'undefined') {
+					var t = $(state.element).data('dygraph-theme');
+					if(t === 'sparkline')
+						state.dygraph_sparkline = true;
+					else
+						state.dygraph_sparkline = false;
+				}
+				return state.dygraph_sparkline;
+			}
+		},
+		"sparkline": {
+			initialize: NETDATA.sparklineInitialize,
+			create: NETDATA.sparklineChartCreate,
+			update: NETDATA.sparklineChartUpdate,
+			resize: null,
+			setSelection: undefined, // function(state, t) { return true; },
+			clearSelection: undefined, // function(state) { return true; },
+			initialized: false,
+			enabled: true,
+			format: function(state) { return 'array'; },
+			options: function(state) { return 'flip|abs'; },
+			legend: function(state) { return null; },
+			autoresize: function(state) { return false; },
+			max_updates_to_recreate: function(state) { return 5000; },
+			track_colors: function(state) { return false; },
+			pixels_per_point: function(state) { return 3; }
+		},
+		"peity": {
+			initialize: NETDATA.peityInitialize,
+			create: NETDATA.peityChartCreate,
+			update: NETDATA.peityChartUpdate,
+			resize: null,
+			setSelection: undefined, // function(state, t) { return true; },
+			clearSelection: undefined, // function(state) { return true; },
+			initialized: false,
+			enabled: true,
+			format: function(state) { return 'ssvcomma'; },
+			options: function(state) { return 'null2zero|flip|abs'; },
+			legend: function(state) { return null; },
+			autoresize: function(state) { return false; },
+			max_updates_to_recreate: function(state) { return 5000; },
+			track_colors: function(state) { return false; },
+			pixels_per_point: function(state) { return 3; }
+		},
+		"morris": {
+			initialize: NETDATA.morrisInitialize,
+			create: NETDATA.morrisChartCreate,
+			update: NETDATA.morrisChartUpdate,
+			resize: null,
+			setSelection: undefined, // function(state, t) { return true; },
+			clearSelection: undefined, // function(state) { return true; },
+			initialized: false,
+			enabled: true,
+			format: function(state) { return 'json'; },
+			options: function(state) { return 'objectrows|ms'; },
+			legend: function(state) { return null; },
+			autoresize: function(state) { return false; },
+			max_updates_to_recreate: function(state) { return 50; },
+			track_colors: function(state) { return false; },
+			pixels_per_point: function(state) { return 15; }
+		},
+		"google": {
+			initialize: NETDATA.googleInitialize,
+			create: NETDATA.googleChartCreate,
+			update: NETDATA.googleChartUpdate,
+			resize: null,
+			setSelection: undefined, //function(state, t) { return true; },
+			clearSelection: undefined, //function(state) { return true; },
+			initialized: false,
+			enabled: true,
+			format: function(state) { return 'datatable'; },
+			options: function(state) { return ''; },
+			legend: function(state) { return null; },
+			autoresize: function(state) { return false; },
+			max_updates_to_recreate: function(state) { return 300; },
+			track_colors: function(state) { return false; },
+			pixels_per_point: function(state) { return 4; }
+		},
+		"raphael": {
+			initialize: NETDATA.raphaelInitialize,
+			create: NETDATA.raphaelChartCreate,
+			update: NETDATA.raphaelChartUpdate,
+			resize: null,
+			setSelection: undefined, // function(state, t) { return true; },
+			clearSelection: undefined, // function(state) { return true; },
+			initialized: false,
+			enabled: true,
+			format: function(state) { return 'json'; },
+			options: function(state) { return ''; },
+			legend: function(state) { return null; },
+			autoresize: function(state) { return false; },
+			max_updates_to_recreate: function(state) { return 5000; },
+			track_colors: function(state) { return false; },
+			pixels_per_point: function(state) { return 3; }
+		},
+		"c3": {
+			initialize: NETDATA.c3Initialize,
+			create: NETDATA.c3ChartCreate,
+			update: NETDATA.c3ChartUpdate,
+			resize: null,
+			setSelection: undefined, // function(state, t) { return true; },
+			clearSelection: undefined, // function(state) { return true; },
+			initialized: false,
+			enabled: true,
+			format: function(state) { return 'csvjsonarray'; },
+			options: function(state) { return 'milliseconds'; },
+			legend: function(state) { return null; },
+			autoresize: function(state) { return false; },
+			max_updates_to_recreate: function(state) { return 5000; },
+			track_colors: function(state) { return false; },
+			pixels_per_point: function(state) { return 15; }
+		},
+		"d3": {
+			initialize: NETDATA.d3Initialize,
+			create: NETDATA.d3ChartCreate,
+			update: NETDATA.d3ChartUpdate,
+			resize: null,
+			setSelection: undefined, // function(state, t) { return true; },
+			clearSelection: undefined, // function(state) { return true; },
+			initialized: false,
+			enabled: true,
+			format: function(state) { return 'json'; },
+			options: function(state) { return ''; },
+			legend: function(state) { return null; },
+			autoresize: function(state) { return false; },
+			max_updates_to_recreate: function(state) { return 5000; },
+			track_colors: function(state) { return false; },
+			pixels_per_point: function(state) { return 3; }
+		},
+		"easypiechart": {
+			initialize: NETDATA.easypiechartInitialize,
+			create: NETDATA.easypiechartChartCreate,
+			update: NETDATA.easypiechartChartUpdate,
+			resize: null,
+			setSelection: NETDATA.easypiechartSetSelection,
+			clearSelection: NETDATA.easypiechartClearSelection,
+			initialized: false,
+			enabled: true,
+			format: function(state) { return 'array'; },
+			options: function(state) { return 'absolute'; },
+			legend: function(state) { return null; },
+			autoresize: function(state) { return false; },
+			max_updates_to_recreate: function(state) { return 5000; },
+			track_colors: function(state) { return true; },
+			pixels_per_point: function(state) { return 3; },
+			aspect_ratio: 100
+		},
+		"gauge": {
+			initialize: NETDATA.gaugeInitialize,
+			create: NETDATA.gaugeChartCreate,
+			update: NETDATA.gaugeChartUpdate,
+			resize: null,
+			setSelection: NETDATA.gaugeSetSelection,
+			clearSelection: NETDATA.gaugeClearSelection,
+			initialized: false,
+			enabled: true,
+			format: function(state) { return 'array'; },
+			options: function(state) { return 'absolute'; },
+			legend: function(state) { return null; },
+			autoresize: function(state) { return false; },
+			max_updates_to_recreate: function(state) { return 5000; },
+			track_colors: function(state) { return true; },
+			pixels_per_point: function(state) { return 3; },
+			aspect_ratio: 70
+		}
+	};
+
+	NETDATA.registerChartLibrary = function(library, url) {
+		if(NETDATA.options.debug.libraries === true)
+			console.log("registering chart library: " + library);
+
+		NETDATA.chartLibraries[library].url = url;
+		NETDATA.chartLibraries[library].initialized = true;
+		NETDATA.chartLibraries[library].enabled = true;
+	}
+
+	// ----------------------------------------------------------------------------------------------------------------
+	// Start up
+
+	NETDATA.requiredJs = [
+		{
+			url: NETDATA.serverDefault + 'lib/bootstrap.min.js',
+			isAlreadyLoaded: function() {
+				if(typeof $().emulateTransitionEnd == 'function')
+					return true;
+				else {
+					if(typeof netdataNoBootstrap !== 'undefined' && netdataNoBootstrap)
+						return true;
+					else
+						return false;
+				}
+			}
+		},
+		{
+			url: NETDATA.serverDefault + 'lib/jquery.nanoscroller.min.js',
+			isAlreadyLoaded: function() { return false; }
+		},
+		{
+			url: NETDATA.serverDefault + 'lib/bootstrap-toggle.min.js',
+			isAlreadyLoaded: function() { return false; }
+		}
+	];
+
+	NETDATA.requiredCSS = [
+		{
+			url: NETDATA.themes.current.bootstrap_css,
+			isAlreadyLoaded: function() {
+				if(typeof netdataNoBootstrap !== 'undefined' && netdataNoBootstrap)
+					return true;
+				else
+					return false;
+			}
+		},
+		{
+			url: NETDATA.serverDefault + 'css/font-awesome.min.css',
+			isAlreadyLoaded: function() { return false; }
+		},
+		{
+			url: NETDATA.themes.current.dashboard_css,
+			isAlreadyLoaded: function() { return false; }
+		},
+		{
+			url: NETDATA.serverDefault + 'css/bootstrap-toggle.min.css',
+			isAlreadyLoaded: function() { return false; }
+		}
+	];
+
+	NETDATA.loadRequiredJs = function(index, callback) {
+		if(index >= NETDATA.requiredJs.length)  {
+			if(typeof callback === 'function')
+				callback();
+			return;
+		}
+
+		if(NETDATA.requiredJs[index].isAlreadyLoaded()) {
+			NETDATA.loadRequiredJs(++index, callback);
+			return;
+		}
+
+		if(NETDATA.options.debug.main_loop === true)
+			console.log('loading ' + NETDATA.requiredJs[index].url);
+
+		$.ajax({
+			url: NETDATA.requiredJs[index].url,
+			cache: true,
+			dataType: "script"
+		})
+		.success(function() {
+			if(NETDATA.options.debug.main_loop === true)
+				console.log('loaded ' + NETDATA.requiredJs[index].url);
+
+			NETDATA.loadRequiredJs(++index, callback);
+		})
+		.fail(function() {
+			alert('Cannot load required JS library: ' + NETDATA.requiredJs[index].url);
+		})
+	}
+
+	NETDATA.loadRequiredCSS = function(index) {
+		if(index >= NETDATA.requiredCSS.length)
+			return;
+
+		if(NETDATA.requiredCSS[index].isAlreadyLoaded()) {
+			NETDATA.loadRequiredCSS(++index);
+			return;
+		}
+
+		if(NETDATA.options.debug.main_loop === true)
+			console.log('loading ' + NETDATA.requiredCSS[index].url);
+
+		NETDATA._loadCSS(NETDATA.requiredCSS[index].url);
+		NETDATA.loadRequiredCSS(++index);
+	}
+
+	NETDATA.errorReset();
+	NETDATA.loadRequiredCSS(0);
+
+	NETDATA._loadjQuery(function() {
+		NETDATA.loadRequiredJs(0, function() {
+			if(typeof netdataDontStart === 'undefined' || !netdataDontStart) {
+				if(NETDATA.options.debug.main_loop === true)
+					console.log('starting chart refresh thread');
+
+				NETDATA.start();
+			}
+		});
+	});
+
+	// window.NETDATA = NETDATA;
+// })(window, document);