//  ButtonSwap
//  einen beliebigen Knopf animieren. Er muss dreifach vorliegen, jeweils mit den Endungen ".on", ".off" und ".here".
//  Aufruf-Beispiel: <a href="Partner.htm" onmouseOver="Over('UpLeft')" onmouseOut="Out('UpLeft')" onClick="Click('UpLeft')"><img border=0 width="39" height="39" src="../images/UpLeft_off.gif" Name="UpLeft" alt="Zu unseren Partnern..."></a>

var path = "../images/"
var ext  = ".gif";
var on   = "_on";
var off  = "_off";
var here = "_here";

function setPath(p)
{
// alert ("neuer Path="+p);
  path=p;
}

function Over(ButtonName)
{
//  alert ("Over: "+path+ButtonName+on+ext);
  document[ButtonName].src    = path+ButtonName+on+ext;
}

function Out(ButtonName)
{
  document[ButtonName].src    = path+ButtonName+off+ext;
}

function Click(ButtonName)
{
  document[ButtonName].src    = path+ButtonName+here+ext;
}