function setnav(n){
	var menu=document.getElementById("channeltrees").getElementsByTagName("a");   
	var showdiv=document.getElementById("navlink").getElementsByTagName("dd");   
	for(i=0;i<showdiv.length;i++)
	{
		//menu[i].className=i==n?"labelover":""; 		
		showdiv[i].style.display=i==n?"block":"none";   
	}
}
function setri(n){
	var menu=document.getElementById("rilist").getElementsByTagName("span");   
	var showdiv=document.getElementById("rilist").getElementsByTagName("dd");   
	for(i=0;i<showdiv.length;i++)
	{
		menu[i].className=i==n?"rov":""; 		
		showdiv[i].style.display=i==n?"block":"none";   
	}
}