<script>
var box=document.getElementById("bbs_3d"),can=true;
box.innerHTML+=box.innerHTML;
box.onmouseover=function(){can=false};
box.onmouseout=function(){can=true};
new function (){
var stop=box.scrollTop%125==0&&!can;
if(!stop)box.scrollTop==parseInt(box.scrollHeight/2)?box.scrollTop=0:box.scrollTop++;
setTimeout(arguments.callee,box.scrollTop%125?10:3000);
};
</script>