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diff --git a/web/server/h2o/libh2o/misc/oktavia/lib/oktavia-jquery-highlight.js b/web/server/h2o/libh2o/misc/oktavia/lib/oktavia-jquery-highlight.js
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@@ -0,0 +1,105 @@
+/**
+ * @fileOverview
+ * A UI script helper that provides search word highlight.
+ * Almost all code came from Sphinx
+ * @author Yoshiki Shibukawa, yoshiki@shibu.jp
+ */
+
+(function ($)
+{
+    /**
+     * small helper function to urldecode strings
+     */
+    function urldecode(x)
+    {
+        return decodeURIComponent(x).replace(/\+/g, ' ');
+    }
+
+    /**
+     * This function returns the parsed url parameters of the
+     * current request. Multiple values per key are supported,
+     * it will always return arrays of strings for the value parts.
+     */
+    function getQueryParameters(s)
+    {
+        if (typeof s == 'undefined')
+        s = document.location.search;
+        var parts = s.substr(s.indexOf('?') + 1).split('&');
+        var result = {};
+        for (var i = 0; i < parts.length; i++)
+        {
+            var tmp = parts[i].split('=', 2);
+            var key = urldecode(tmp[0]);
+            var value = urldecode(tmp[1]);
+            if (key in result)
+            {
+                result[key].push(value);
+            }
+            else
+            {
+                result[key] = [value];
+            }
+        }
+        return result;
+    }
+
+    /**
+     * highlight a given string on a jquery object by wrapping it in
+     * span elements with the given class name.
+     */
+    jQuery.fn.highlightText = function(text, className)
+    {
+        function highlight(node)
+        {
+            if (node.nodeType == 3)
+            {
+                var val = node.nodeValue;
+                var pos = val.toLowerCase().indexOf(text);
+                if (pos >= 0 && !jQuery(node.parentNode).hasClass(className))
+                {
+                    var span = document.createElement("span");
+                    span.className = className;
+                    span.appendChild(document.createTextNode(val.substr(pos, text.length)));
+                    node.parentNode.insertBefore(span, node.parentNode.insertBefore(
+                        document.createTextNode(val.substr(pos + text.length)),
+                        node.nextSibling));
+                    node.nodeValue = val.substr(0, pos);
+                }
+            }
+            else if (!jQuery(node).is("button, select, textarea"))
+            {
+                jQuery.each(node.childNodes, function() {
+                    highlight(this);
+                });
+            }
+        }
+        return this.each(function() {
+            highlight(this);
+        });
+    };
+
+    /**
+     * highlight the search words provided in the url in the text
+     */
+    function highlightSearchWords(selector)
+    {
+        var params = getQueryParameters();
+        var terms = (params.highlight) ? params.highlight[0].split(/\s+/) : [];
+        if (terms.length)
+        {
+            var body = $(selector);
+            window.setTimeout(function()
+            {
+                $.each(terms, function()
+                {
+                    body.highlightText(this.toLowerCase(), 'highlighted');
+                });
+            }, 10);
+        }
+    }
+
+    jQuery(document).ready(function () {
+        highlightSearchWords('body');
+    });
+})(jQuery);
+