@media all {

ul#main_nav li { width: 33.333%; }
ul#main_nav li.special { width: 33%; }
* html ul#main_nav li.special { width: 33%; }
*+html ul#main_nav li.special { width: 33%; }

ul#main_nav li.special a:link,
ul#main_nav li.special a:visited, 
ul#main_nav li.special a:active, 
ul#main_nav li.special a:focus, 
ul#main_nav li.special a:hover {
	background-image: none;
} 

}