Links not working on my page?

Hi all,

After I added:

#ad2 {
	      text-align: right;
		  padding:0 40px;
		  position:relative;
		  }

#clock {
	      position:absolute;
		  left:30px;
		  top:5px;
		  }

in my CSS I cant click any links on my page with firefox, Inet Explorer can.

How to fix this?

My CSS stylesheet:
CLICK HERE

My header.php(where the 2 div’s are used)
CLICK HERE

Thanks!