I've been having some problems implementing a simple treeview. In firefox or chrome the animation renders very quickly, but in IE 7 any expansion or contraction is slow and choppy at best. I've found that the culprit seems to be that the page's background is a 1px wide gradient (gif) that is repeated horizontally. If I take out the background then it renders perfectly in IE.
Any help making IE behave better would be much appreciated. Thanks, Nick