//向左滚动
var MyMar,speed3=50//速度数值越大速度越慢
var fst=false;

function Marquee()
{
	if(demo1.offsetWidth>=demo.offsetWidth&&fst==false)
	{
		fst=true;
	    demo2.innerHTML=demo1.innerHTML;
	}
		
	if(demo2.offsetWidth-demo.scrollLeft<=0)
		demo.scrollLeft-=demo1.offsetWidth;
	else
	{
		demo.scrollLeft++;
	}
}

MyMar=setInterval(Marquee,speed3);

demo.onmouseover=function()
{
	clearInterval(MyMar);
}

demo.onmouseout=function()
{
	MyMar=setInterval(Marquee,speed3);
}

//window.setTimeout("begin", 1);