Fix CSS/javascript issue on joomla site

I have a site with a div conflict, and javascript bug on the back end. On the frontend: If we have the slideshow from this page: [login to view URL] Turned ON on the home page, it looks like it conflicts with a form we have in 'user1' position. If you remove the slideshow on the home page, the form renders in user1 (the grass area). Probably a simple hack of renaming a div in the module? On the backend - when you try to link an article to a menu item the javascript popup "lightbox" actually opens in a new window and does not operate. the popup/lightbox functionality needs to be fixed. Problem --- I broke it by making the other parts of the site work in IE7/IE8 - when you are done fixing you will need to be sure all the pages render properly in all versions of IE (like they do now..) Should be very simple!