var area = document.getElementById('moocBox');

?var con1 = document.getElementById('con1');

?var con2 = document.getElementById('con2');

?var speed = 50;

?area.scrollTop = 0;

?con2.innerHTML = con1.innerHTML;

?function scrollUp(){

if(area.scrollTop >= con1.scrollHeight) {

area.scrollTop = 0;

}else{

? area.scrollTop ++;?

}?

}

var myScroll = setInterval("scrollUp()",speed);

area.onmouseover = function(){

clearInterval(myScroll);

}

area.onmouseout = function(){

myScroll = setInterval("scrollUp()",speed);

}