function adjustHeight()
{
  isIE7 = false;
 if((document.all)&&(navigator.appVersion.indexOf("MSIE 7.")!=-1))
 {
  isIE7 = true;
 }
  var y;
if (self.innerHeight) // all except Explorer
{

	y = self.innerHeight;

}
else if (document.documentElement && document.documentElement.clientHeight)
	// Explorer 6 Strict Mode
{
	y = document.documentElement.clientHeight;
 document.getElementById('col2').style.top = "-415px";

 document.getElementById('col2').style.right = "1px";
 document.getElementById('col2').style.marginBottom = "-415px";
 document.getElementById('col3').style.marginTop = "-10px";
 document.getElementById('col3').style.marginBottom = "7px";

}
else if (document.body) // other Explorers
{
	y = document.body.clientHeight;
}

  if(isIE7)
  {
   document.getElementById('col3').style.position = "absolute";
   document.getElementById('col3').style.top = "187px";
   document.getElementById('col3').style.marginLeft = "25%";
   document.getElementById('col3').style.marginRight = "187px";
   document.getElementById('col2').style.position = "absolute";
   document.getElementById('col2').style.top = "177px";
   document.getElementById('col2').style.right = "11px";
   x = document.body.clientWidth;
   width = (x - 187) - (0.25 * x) - 110;
//   alert("gesamt: " + x + ", mittlere Spalte: " + width);
   document.getElementById('col3').style.width = width + "px";
  
  }
	 var ah = y - 210;
 document.getElementById('col1').style.height = ah + "px";
 document.getElementById('col2').style.height = ah + "px";
 document.getElementById('col3').style.height = ah + "px";


 return true; 
}