I have some trivial JavaScript to effect a style change:
sel = document.getElementById(\'my_id\'); sel.className = sel.className.replace(/item-[1-9]-selected
Since the display + offset trigger didn't work for me, I found a solution here:
http://mir.aculo.us/2009/09/25/force-redraw-dom-technique-for-webkit-based-browsers/
i.e.
element.style.webkitTransform = 'scale(1)';