var activeImg;
var ext;
var newext;
var i;

// _o.ext = over
// _d.ext = down

function mouseGoesOver()
{
 if(this.id == 'active_menu') 
 { 
  return; 
 }
 
 i = this.src.lastIndexOf('.');
 ext = this.src.substr(i);
 this.src = this.src.replace(ext, '_select' + ext);
}

function mouseGoesOut()
{
 if(this.id == 'active_menu') 
 {
   return; 
 }
 
 i = this.src.lastIndexOf('_');
 ext = this.src.substr(i);
 newext = ext.replace('_select','');
 this.src = this.src.replace(ext, newext);
 setActive();
}

function setActive()
{
 activeImg = document.getElementById('active_menu');
 if(activeImg)
 {
  // Wenn das Bild nicht bereits aktiv ist
	if(activeImg.src.lastIndexOf('_select') == -1) 
	{
	 i = activeImg.src.lastIndexOf('.');
   ext = activeImg.src.substr(i);
   activeImg.src = activeImg.src.replace(ext, '_select' + ext);
	}
 } 
}

function initMouseovers()
{
	var imgs = document.getElementsByTagName('img');
	for (var i=0;i<imgs.length;i++)
	{
		if(imgs[i].getAttribute('class') == "rollover" || imgs[i].getAttribute('classname') == "rollover")
		{
		imgs[i].onmouseover = mouseGoesOver;
		imgs[i].onmouseout = mouseGoesOut;
		}
	}
}

function setSize()
{
 theframe = document.getElementById("pageFrame");
 rightcol = document.getElementById("rightColumn");

 fh = theframe.offsetHeight;
 rch = rightcol.offsetHeight;
 if(fh < (rch+160)) 
 {
  theframe.style.height = (rch+160) + "px"; 
 } 

}

window.onload = function() {
  initMouseovers();
  setActive();
}