510947 fix javascript/css problem with dropdown menus

for the site at [login to view URL] there is a problem with the yellow menu across the top where it does not stay popped down in IE (7 and 8). It works as it should in firefox, chrome and safari. IE says there's an error in the code. If you know how to fix this please bid. This is obviously a small job for someone who is good in javascript and css.