$(document).ready(function() {      
$("ul#topnav li").hover(function() { //Hover over event on list item     
      $(this).css({ 'background' : '#f57520 url(/design/base/img/main-menu-orange.png) 0 0 repeat-x'}); //Add background color + image on hovered list item 	    
	    $(this).find("span").show(); //Show the subnav
        } , 
    function() { //on hover out...    
      if($(this).hasClass("sel"))
       $(this).css({ 'background' : 'white'}); //Ditch the background
      else
        $(this).css({ 'background' : 'none'}); //Ditch the background
      $(this).find("span").hide(); //Hide the subnav       
      });
	
});