Please attach an actual copy of the page instead of copy and pasting the code when you want me to look at a file.  It helps when I can open it with Dreamweaver.
I'd probably have to debug this on your server.  My best guess is that it is a conflict with the other script on your page.  I see you have some repeated jquery form validation code that might be causing issues.  Can I get FTP access and a url with steps to reproduce?

 















