var speedt=50
  demot2.innerHTML=demot1.innerHTML+demot1.innerHTML+demot1.innerHTML+demot1.innerHTML+demot1.innerHTML+demot1.innerHTML+demot1.innerHTML
  function Marqueet(){
  if(demot1.offsetHeight-demot.scrollTop<=0)
  demot.scrollTop-=demot1.offsetHeight
  else{
  demot.scrollTop++
  }
  }
  var MyMart=setInterval(Marqueet,speedt)
  demot.onmouseover=function() {clearInterval(MyMart)}
  demot.onmouseout=function() {MyMart=setInterval(Marqueet,speedt)}