function casecadeHoverUp(element,state)
{
   if( state=="off" ){ element.className=element.className.replace(" selected","");}
   else{ element.className+=" selected"; }
   return true;
}

function setRolloverNavigation()
{
   var ie = (navigator.userAgent.indexOf("MSIE")>-1);
   var ie7 = (navigator.userAgent.indexOf("MSIE 7")>-1);
   if( ie && !ie7 )
   {
	  var navdiv = document.getElementById("nav");
	  var listItems = navdiv.getElementsByTagName("li");
	  for( var i=0; i<listItems.length; i++ )
	  {
         var sublists = listItems[i].getElementsByTagName("UL");
         if( sublists.length )
         {
            listItems[i].className = listItems[i].className+" hassubs";
         }
         listItems[i].onmouseover = function() { casecadeHoverUp(this,"on"); };
         listItems[i].onmouseout = function() { casecadeHoverUp(this,"off"); };
      }
   }
   return true;
}

window.onload = new Function('setRolloverNavigation()');