var rollspeed=30
document.getElementById("rolllink2").innerHTML=document.getElementById("rolllink1").innerHTML //copyr olllink1 to rolllink2
function Marquee1(){
if(document.getElementById("rolllink2").offsetTop-document.getElementById("movepic").scrollTop<=0) //roll between rolllink1 and rolllink2
document.getElementById("movepic").scrollTop-=document.getElementById("rolllink1").offsetHeight //rolllink jump to top of the div
else{
document.getElementById("movepic").scrollTop++
} 
} 
var MyMar1=setInterval(Marquee1,rollspeed) //set a timer
document.getElementById("movepic").onmouseover=function() {clearInterval(MyMar1)}//roll stop when mouse over
document.getElementById("movepic").onmouseout=function() {MyMar1=setInterval(Marquee1,rollspeed)}//roll angain when mouse out