In Firefox it works fine, but in IE 6 it hangs. Check out this page and click on the "tag suggestions" link in the middle of the page. I copied the exact source code from Particle Tree here - http://particletree.com/features/lightbox-gone-wild/ Can anyone tell what IE is hanging on? I tried firebug & the firefox debugger but neither show any problems. Hoping someone here can see an error somewhere... thanks!