<!DOCTYPE HTML> <html> <body onload="doTest()"> <canvas id="c" width="200" height="200" style="display:block"></canvas> <img id="img" src="image_green-16x16.png" style="display:none"> <script> var c = document.getElementById("c"); var img = document.getElementById("img"); var ctx = c.getContext("2d"); ctx.shadowColor = "black"; ctx.shadowOffsetX = 0; ctx.shadowOffsetY = 10; function doTest() { ctx.drawImage(img, 0, 0); } </script> </body> </html>