function ad100_300_expand()
{
  var div=document.getElementById("banner_rozwijany");
  if(div)
  {
    div.parentNode.style.height="300px";
  }
}

function ad100_300_collapse()
{
  var div=document.getElementById("banner_rozwijany");
  if(div)
  {
    div.parentNode.style.height="100px";
  }
}