If you're talking about "pinch" events, I switched to the Hammer library for canvas input events, so it should be OK now. Sadly I cannot test it on mobile since I only have iOS devices and the Vixel renderer doesn't seem to work on iOS.
oh did not know it had zoom. No I meant the fixed 800 pixel width means I only see the lefthandside on mobile. the global variable "width" will report the current pixel width of the screen, which is very handy if CSS width=100% is not possible.