function roll(speed,demo,demo1,demo2){
	var sw_speed = speed;
	var sw_emo=document.getElementById(demo);
	var sw_emo1=document.getElementById(demo1);
	var sw_emo2=document.getElementById(demo2);
	sw_emo2.innerHTML=sw_emo1.innerHTML
	function sw_Marquee1(){
	if(sw_emo2.offsetHeight-sw_emo.scrollTop<=0)
	sw_emo.scrollTop-=sw_emo1.offsetHeight
	else{
	sw_emo.scrollTop++
	}
	}
	var sw_MyMar1=setInterval(sw_Marquee1,sw_speed)
	sw_emo.onmouseover=function() {clearInterval(sw_MyMar1)}
	sw_emo.onmouseout=function() {sw_MyMar1=setInterval(sw_Marquee1,sw_speed)}
}