function changeDiv(divid,divnum){
		for(var i=1;i<=divnum;i++){
			var divobj=document.getElementById("divbys"+i);
			var dobj=document.getElementById("dbys"+i);

			if(divid=="bys"+i){
				divobj.style.background="url('/public/0/resource/hnedutv/045.gif')";
				divobj.style.color="#d20000";
				divobj.style.fontWeight="bold";
				dobj.style.display="block";
			}else{
				divobj.style.background="url('/public/0/resource/hnedutv/044.gif')";
				divobj.style.color="#333333";
				divobj.style.fontWeight="normal";
				dobj.style.display="none";
			}
		}

}