Merge pull request remy#13 from kralyk/master

canvas-grad.html fix

Author: remy

canvas-grad.html

@@ -47,7 +47,7 @@
         x = event.clientX, 
         y = event.clientY,
         rx = 600 * x / width,
-        ry = 600 * y / width;
+        ry = 600 * y / height;
 
     var xc = ~~(256 * x / width);
     var yc = ~~(256 * y / height);