Could someone please help me figure out why my javascript effect is working in safari but in IE it won't work. Its supposed to expand when clicked like this effect .
There is a error message saying 'collapse1' is null or not an object?
the page: www.simonsmusic .com/test/
it seems to work with out the rest of the page elements (menus etc.), but once the script is in a page with other elements it does...