var onlineSub=new onlines();
onlineSub.move();
function onlines(){
	var onlineBox=$("online");
	var ns = (navigator.appName.indexOf("Netscape") != -1);
	var olY=0;		//Y坐标
	this.move=function(){
		var docW=(document.body.clientWidth || document.body.offsetWidth);
		var docH=self.innerHeight || document.documentElement.clientHeight || document.body.clientHeight || document.body.offsetHeight;
		var scT= ns ? pageYOffset : document.documentElement.scrollTop;
		var ol_T=scT+15;
		olY+=(ol_T-olY)/8;
		//if(olY>=ol_T-2 && olY<=ol_T+2) olY=ol_T;
		
		if(onlineBox){
			onlineBox.style.top=olY+"px";
		}
		setTimeout("onlineSub.move()", 10);
	}
}