function gd_kf(id,id2,_top){
		var me=id.charAt?document.getElementById(id):id, d1=document.body, d2=document.documentElement;
		var me2=id2.charAt?document.getElementById(id2):id2, d3=document.body, d4=document.documentElement;
		d1.style.height=d2.style.height='100%';me.style.top=_top?_top+'px':0;me.style.left=me.offsetLeft
		+"px";//[(_left>0?'left':'left')]=_left?Math.abs(_left)+'px':0;
		d3.style.height=d4.style.height='100%';me2.style.top=_top?_top+'px':0;me2.style.left=me2.offsetLeft+"px";
		me.style.position='absolute';
		setInterval(function (){me.style.top=parseInt(me.style.top)+(Math.max(d1.scrollTop,d2.scrollTop)+_top-parseInt(me.style.top))*0.1+'px';},10+parseInt(Math.random()*20));
		me2.style.position='absolute';
		setInterval(function (){me2.style.top=parseInt(me2.style.top)+(Math.max(d3.scrollTop,d4.scrollTop)+_top-parseInt(me2.style.top))*0.1+'px';},10+parseInt(Math.random()*20));
		return arguments.callee;
		};