/*-----------滚动--------------*/
function Marquee(){
	if(demo2.offsetTop-demo.scrollTop<=0)
		demo.scrollTop-=demo1.offsetHeight
	else{
		demo.scrollTop++
	}
}
function marq(speed){
demo1.innerHTML+=demo1.innerHTML;
demo2.innerHTML=demo1.innerHTML;
var MyMar=setInterval(Marquee,speed)
demo.onmouseover=function() {clearInterval(MyMar)}
demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}
}