Ouch. Sorry - that is indeed a problem (not necessarily in this context - this page goes away on monday - but in general)! Strangely, we are reusing our objects

Ouch. Sorry - that is indeed a problem (not necessarily in this context - this page goes away on monday - but in general)! Strangely, we are reusing our objects, so I don't think it can be the javascript code itself. Could it somehow be Firefox's implementation of canvas? I will investigate. Thanks!