How to do in HTML5 canvas Image animating?

I am have this code now: http://jsfiddle.net/WnjB6/1/

In here I am can add animations something like -> Animation.add('stand', [0, 1, 2, 3, 4, 5]);

But how to play this animation? My image drawing function is -> drawTile(canvasX, canvasY, tile, tileWidth, tileHeight);

Animation['stand']; return 0, 1, 2, 3, 4, 5

I am need something like when I am run Animation.play('stand') run animation from 'stand' array.

I am try to do this something like one day, but no have more idea how. :(

Thanks and sorry for my bad English language.