var speed=5
var crossobj
var contentwidth
var stopx

function movedown(){
if(crossobj) {
if (parseInt(crossobj.style.left)>=(contentwidth*(-1)))
crossobj.style.left=parseInt(crossobj.style.left)-speed+'px'
movedownvar=setTimeout("movedown()",20)
}
}
function moveup(){
	if(crossobj) {
if (parseInt(crossobj.style.left)<=0)
crossobj.style.left=parseInt(crossobj.style.left)+speed+'px'
moveupvar=setTimeout("moveup()",20)
	}
}
function getcontent_height(){
crossobj=document.getElementById? document.getElementById("content") : document.all.content
if(crossobj) 
contentwidth=crossobj.offsetWidth
}