Dropdown menu positioned differently in FIREFOX than IE7

[Norseman]

I've got experience in working with web pages, but inherited responsibility for maintaining our church website (www.gsumc.net) and have a couple questions relative to how coolmenu.js is functioning.

The gent who originally built the website used the Javascript menu to provide the dropdown menus on the left side of the screen. The dropdowns work fine in terms of doing what they're supposed to do. Here are my questions:

1. On the home page (www.gsumc.net) everything works great, except the dropdown Javascript menu has somehow mysteriously crept up and "overlaid" the search box when you open it in the FIREFOX browser. If you open it in INTERNET EXPLORER 7, everything looks great. What do you suppose causes the menu to overlay the search box in FIREFOX, but present okay in IE7?

2. The way our site was designed, the Javascript dropdown menu appears on all subordinate pages. However, when I drill down to subordinate pages from the home page (for example, select Fellowships/Women (UMW)) the Javascript dropdown menus don't appear the same as they do on the home page. My question is why isn't the "coolmenu.js" file used on the homepage not being used by the subordinate pages? Are the subordinate pages looking at another version of coolmen.js that may be sitting on the web site?

[AlexKunin]