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

function setRolloverNavigation()
{
   var ie = navigator.userAgent.indexOf("MSIE");
   var ie7 = navigator.userAgent.indexOf("MSIE 7");
   var navdiv = document.getElementById("topnavigation");
	var listItems = document.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"); };
   }
}

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