Issue with nav menu in MSIE 5 and 6

My nav menu works fine in MSIE 7 and Firefox but in MSIE 5 and 6 a white box appears under the menu.

I have screenshots attached.

Here is my code:

#navwrapnew {
  width: 100%;
  float: left;
  display: inline;
  background: #CADAEE;
  border-top: 0;
  border-bottom: 0;
  }
#topwrapnew {
  width: 770px;
  margin: auto;
  }

PHP:

Any ideas what is needed to fix it?

 

Care to show us the HTML that goes with the CSS?

 

Here is the page: http://www.sharkspace.com/test10.html

Thanks