Hey, I’ve been working with the same issues, and I’m thinking the only true way to get the results we want may be to do a flipbook texture. I have yet to test if they’ll work in HTML5, but this might be our solution. I’ve heard of a program called GlueIt (http://www.varcade.com/blog/glueit-sprite-sheet-maker-download/). Hopefully this helps. I’ll be testing it out as soon as I get home.