navgation inline missing on IE 6.0, all broswer fine..

Its really very strange when i test the screenshot webpages with different broswers.

the inline of menu is was appearing on most broswers but not ie 6.0 it shows like home.. it suppoused be like home / about us / etc its so strangest thing i ever seen

link http://www.azdesertfire.net/index.php

and i attached the ie 6.0 screenshot. you can see what the issues. so hope anybody over there can help thank you.