var CantChange = "clear";
var ChangeNow = "clear";
function Preload(Name,Src) 
  {
    eval(Name+' = new Image()')
    eval(Name+'.src = "'+Src+'"')
  }
  
function _Init()
  {
  if (navigator.appVersion.charAt(0) < 4 || !navigator.javaEnabled())return;
  Preload('clear','../clearpix.gif');
  Preload('b1','pics/visualisierung1.gif');
  Preload('b2','pics/architekturgrafik1.gif'); 
  Preload('b3','pics/architekturfotografie1.gif'); 
  Preload('b4','pics/internet1.gif');
  Preload('b5','pics/vis-01-06a-00.jpg');
  Preload('b6','pics/gra-03-04a-00.jpg'); 
  Preload('b7','pics/med-01-02h-00.jpg'); 
  Preload('b8','pics/int-02-01a-00.jpg');
  }
  
function _Change(Name, Src)
  {
  if (navigator.appVersion.charAt(0) < 4 || !navigator.javaEnabled())return;
  if (Name != CantChange) document.images[Name].src=Src;
  }
  
function StopChange(Name, Src)
{
ChangeName = CantChange;
CantChange = Name;
_Change(ChangeName, ChangeNow);
ChangeNow = Src;
}