?var box=document.getElementById("moocBox");
?var con1=document.getElementById('con1');
?var con2=document.getElementById("con2");
?con2.innerHTML=con1.innerHTML;
?box.scrollTop=0;
?function scro(){
??if(box.scrollTop>=con1.scrollHeight){
???box.scrollTop=0;
???
??}
??else{
???box.scrollTop++;
??}
?}
?var? timer =setInterval("scro()",50);
?box.onmouseover=function(){
??clearInterval(timer);
?}
?box.onmouseout=function(){
??timer=setInterval("scro()",50);
?}