I think if you set a width for the #nav it will not break.

Something like this:

Code: Select all

nav{
   background: url("../images/bgmenu.gif") repeat-x;
   height: 50px;
   padding-left: 400px;
   padding-top: 2px;
   width: 400px;
}

Please not I chose a random width.. set it to what you need.
See if that works.