Sidebar and megamenu does not work on Home Page

Hi everybody!
May be some guru can help.
The problem we have is about sidebar button on the homepage, just does not work but only in homepage, when we go to other pages it works perfectly.
And if we aplly megamenu on the top menu, in homepage doesn´t work either.

the site is acuasuruguay.com


Any suggestions?

Sorry for the english. and Thanks in advance.