NS4 = (document.layers) ? true : false;
IE4 = (document.all && !document.getElementById) ? true : false;
IE5 = (document.all && document.getElementById) ? true : false;
NS6 = (!document.all && document.getElementById) ? true : false;

function allover()
{
if(NS4)
{y=window.innerWidth;
 x=window.innerHeight; }
if(NS6)
 {y=window.innerWidth;
 x=window.innerHeight; }

if(IE5)
{x=document.body.clientHeight;
 y=document.body.clientWidth;}
if(IE4)
{x=document.body.clientHeight;
 y=document.body.clientWidth;}

if(NS4)
 {elm = document.layers("logoeier");
  elm.left = y/2+100;
  elm.top = x/2-200;
  }


if(IE4)
 {elm = document.getElementById("logoeier");
  elm.style.pixelLeft = y/2+100;
  elm.style.pixelTop = x/2-200;
  }

if(IE5||NS6)
 {elm = document.getElementById("logoeier");
  elm.style.left = y/2+100;
  elm.style.top = x/2-220;
  elm2 = document.getElementById("logohennen");
  elm2.style.left = y/2-320;
  elm2.style.top = x/2;
  }




 }