UI effects - Class transitions and Chrome problem

UI effects - Class transitions and Chrome problem


I've been trying to use class transitions in the UI effects.core. (1.7
or 1.5.3 jq 1.3.2)
The following jQuery('#myDiv').toggleClass('big','fast'); doesn't
seem to work in Chrome (1.0.154.48) but is fine in FF, IE7 & 6
There is no callback documented for transitions but it does seem to
work fine, at least in ff & ie. Is this a documentation problem or a
feature that shouldn't be relied on?