var curId = 1;
window.setInterval("auto_play()",8000);
function auto_play(){
	nextId = (curId + 1) % 5;
	if(nextId==0){nextId=5;}
	focus_play(nextId);
}
function focus_play(sid){
	curId = sid;
	for(var i=1;i<6;i++){
		if(i==sid){
			document.getElementById("focus_"+i).className="curli";
			document.getElementById("f_"+i).className="curli";
		}
		else{
			document.getElementById("focus_"+i).className="";
			document.getElementById("f_"+i).className="";
		}
	}
}