var speed=1
iens6=document.all||document.getElementById
ns4=document.layers

var crossobj
var contentheight


function movedown(dv){
if (iens6){
crossobj=document.getElementById? document.getElementById("content" + dv) : document.all.content
contentheight=crossobj.offsetHeight
}
else if (ns4){
crossobj=document.nscontainer.document.nscontent
contentheight=crossobj.clip.height
}

if (window.moveupvar) clearTimeout(moveupvar)
if (iens6&&parseInt(crossobj.style.top)>=(contentheight*(-1)+100))
crossobj.style.top=parseInt(crossobj.style.top)-speed+"px"
else if (ns4&&crossobj.top>=(contentheight*(-1)+100))
crossobj.top-=speed
movedownvar=setTimeout("movedown("+dv+")",20)
}

function moveup(dv){
if (iens6){
crossobj=document.getElementById? document.getElementById("content" + dv) : document.all.content
contentheight=crossobj.offsetHeight
}
else if (ns4){
crossobj=document.nscontainer.document.nscontent
contentheight=crossobj.clip.height
}
if (window.movedownvar) clearTimeout(movedownvar)
if (iens6&&parseInt(crossobj.style.top)<=0)
crossobj.style.top=parseInt(crossobj.style.top)+speed+"px"
else if (ns4&&crossobj.top<=0)
crossobj.top+=speed
moveupvar=setTimeout("moveup("+dv+")",20)
}

function stopscroll(){
if (window.moveupvar) clearTimeout(moveupvar)
if (window.movedownvar) clearTimeout(movedownvar)
}

function movetop(){
stopscroll()
if (iens6)
crossobj.style.top=0+"px"
else if (ns4)
crossobj.top=0
}

function getcontent_height(){
if (iens6){
crossobj=document.getElementById? document.getElementById("content1") : document.all.content
contentheight=crossobj.offsetHeight
}
else if (ns4){
crossobj=document.nscontainer.document.nscontent
contentheight=crossobj.clip.height
}
if (iens6)
contentheight=crossobj.offsetHeight
else if (ns4)
document.nscontainer.document.nscontent.visibility="show"
}
//window.onload=getcontent_height