var ii=0;t=demobian.scrollTop
demobian2.innerHTML=demobian1.innerHTML
function qswhMarquee(){
if (ii==1)return
if(demobian2.offsetTop-demobian.scrollTop<=0)
demobian.scrollTop-=demobian1.offsetHeight
else
demobian.scrollTop++
}
setInterval(qswhMarquee,44)