iens6=document.all||document.getElementById
var speed=5

if (iens6){
var crossobj=document.getElementById? document.getElementById("content") : document.all.content
var contentheight=crossobj.offsetHeight
}


function movedown(){
if (iens6&&parseInt(crossobj.style.top)>=(contentheight*(-1)+100))
crossobj.style.top=parseInt(crossobj.style.top)-speed+"px"
movedownvar=setTimeout("movedown()",20)
}

function moveup(){
if (iens6&&parseInt(crossobj.style.top)<=0)
crossobj.style.top=parseInt(crossobj.style.top)+speed+"px"
moveupvar=setTimeout("moveup()",20)

}

function getcontent_height(){
if (iens6)
contentheight=crossobj.offsetHeight
}
window.onload=getcontent_height