function substr_count(string,substring,start,length)
	{
	   var c = 0;
	   if(start) { string = string.substr(start); }
	   if(length) { string = string.substr(0,length); }
	   for (var i=0;i<string.length;i++)
	   	{
		if(substring == string.substr(i,substring.length))
		c++;
	   	}
 		return c;
	}

	function f1(menuID,subPicture,isShow)
		{
			if(subPicture!="" && isShow==1){
			document.getElementById("contentWrapper").style.background="url("+subPicture+") no-repeat 17px bottom";
			}
	
			if(document.getElementById(menuID)!=null){
				if(substr_count(document.getElementById(menuID).className,"sublevel0")>0){
						document.getElementById(menuID).className=document.getElementById(menuID).className+" sub-on";
					}
						else{
							document.getElementById(menuID).className=document.getElementById(menuID).className+" on";
						}
						
	var a=document.getElementById(menuID).parentNode;
	var current;
		
	while(current!="mainNav"){
	current=a.parentNode.id;
	if(a.parentNode.tagName=="LI"){
		if(substr_count(document.getElementById(current).className,"sublevel0")>0){
		document.getElementById(current).className=document.getElementById(current).className+" sub-on";
		}
		else{
		document.getElementById(current).className=document.getElementById(current).className+" on";
		}
	  }
	a=a.parentNode;	
	}
  }	
}