var speed = 3


function movedown() {
  var crossobj = document.getElementById? document.getElementById("content") : document.all.content
  var contentheight = crossobj.offsetWidth
  
  if (parseInt(crossobj.style.left) >= (contentheight*(-1) + parseInt(jQuery('#container').css('width'))))
    crossobj.style.left = parseInt(crossobj.style.left) - speed+"px"

  movedownvar = setTimeout("movedown()", 20)
}

function moveup() {
  var crossobj = document.getElementById ? document.getElementById("content") : document.all.content
  var contentheight = crossobj.offsetWidth
  
  if (parseInt(crossobj.style.left) <= 0)
    crossobj.style.left = parseInt(crossobj.style.left) + speed+"px"

  moveupvar=setTimeout("moveup()", 20)
}