iens6=document.all||document.getElementById;
ns4=document.layers;
var speed=18;
if (iens6){
var crossobj=document.getElementById? document.getElementById("scroll_content") : document.all.content;
var contentheight=crossobj.offsetHeight;
}


function movedown(){
if (iens6&&parseInt(crossobj.style.top)>=(contentheight*(-1)+268))
  crossobj.style.top=parseInt(crossobj.style.top)-speed+'px';
movedownvar=setTimeout("movedown();",100);
}
function scroll_up(){
if (iens6&&parseInt(crossobj.style.top)<0)
    crossobj.style.top=parseInt(crossobj.style.top)+speed+'px';
moveupvar=setTimeout("scroll_up();",100);
}

function getcontent_height(){
contentheight=crossobj.offsetHeight;
  if(contentheight>800) {
    alert("wieksze");
    document.getElementById("suwakgorny").style.visibility = "visible";
    document.getElementById("suwakdolny").style.visibility = "visible";
  }
}
window.onload=getcontent_height;