var speed=4000;
var speed2=30;
var b,b1,b2
var count=0;
var pos;
var s;

function scroll(po)
{
	pos=po;
	b=document.getElementById("b");
	b1=document.getElementById("b1");
	b2=document.getElementById("b2");
	b2.innerHTML=b1.innerHTML;
	var myMar=setInterval(marquee,speed);
	b.onmouseover=function()
	{
		clearInterval(myMar);
	}
	b.onmouseout=function()
	{
		myMar=setInterval(marquee,speed);
	}
}

function marquee()
{
	count=0;
	if(b2.offsetTop-b.scrollTop<=0)
	{
		b.scrollTop-=b1.offsetHeight;
	}
	s=setInterval(slide,speed2);
}

function slide()
{
	b.scrollTop++;
	count++;
	if(count==pos)
	{
		clearInterval(s);
	}
}