function ausgleich()
  {
  if (window.innerWidth<800)
    {
    document.getElementById("kasten").style.left="0px";
    document.getElementById("kasten").style.marginLeft="2px";
    document.getElementsByTagName("body")[0].style.background="White url(/tpl_fredls/pics/hintergrund.gif) repeat-y";
    }
    else
      {
      document.getElementById("kasten").style.left="50%";
      document.getElementById("kasten").style.marginLeft="-389px";
      document.getElementsByTagName("body")[0].style.background="White url(/tpl_fredls/pics/hintergrund.gif) repeat-y center";
      }
  }

window.onresize = ausgleich;