Problems with the navbar

[balance12]

I have a problem when i click in the buttton "quick links" in the navbar

http://www.comunidad-under.com.ar/attachment.php?attachmentid=60&stc=1&d=1211325020


I add some hacks, and modified the template wrongly, and now i dont know what i have to edit...

Help

[Dismounted]

You will have to revert it if you have messed it up and cannot fix it.