var speed=50
   demo2_1.innerHTML=demo1_1.innerHTML   
   function Marquee_1(){
	   if(demo2_1.offsetTop-demo_1.scrollTop<=0)
		   demo_1.scrollTop-=demo1_1.offsetHeight
	   else{
	  	 demo_1.scrollTop++
	   }
   }
   var MyMar_1=setInterval(Marquee_1,speed)
   demo_1.onmouseover=function() {clearInterval(MyMar_1)}
   demo_1.onmouseout=function() {MyMar_1=setInterval(Marquee_1,speed)}