okay, see some of the previous posts, you have too mootools file loading and can only have one. You have a the mootools.js file loading in the template and the mootools.v1.11.js from the moolet. One of these would be wiping our functions of the other.

I suggest moving the mootools.v1.11.js to the template location and coding to the template to read this on of higher value, then turn if off in the moolet so it does not load twice.

If that does not clear you your IE issues you will need to fiddle with your template CSS, but this should do it.

hope that helps

brian