scripts non functional

Our website http://www.serenitycorp.net
Has since a few days a major issue.

Tabbed news max posts showing 5 is showing every tab underneath each other.
When pressing the tab the url will change to tab#1, tab#2, tab#3 etc.

In the header when pressing sign in the menu wont appear.
The menu shows itself however when hover over the drop down, the submenu’s wont appear.

And other blackfyre systems are not showing correctly such as, image carousel and news carousel.

I’ve looked at Cache, Theme template files, scripts not being gathered you name it.
Compared everything with a older backup (from when it was working correctly).

Skywarrior, you should already have access to the pages due to a previous error during our setting up stages the site was called srncorp.com