function EinAus(nameAn,nameAus)
{
 document.getElementById(nameAn).style.visibility="visible";
 document.getElementById(nameAus).style.visibility="hidden";
}
function preloader() 
{
homeImage = new Image(); 
homeImage.src = "Bilder/Home2.gif";
UeberUnsImage = new Image(); 
UeberUnsImage.src = "Bilder/UeberUns2.gif";
KursAngebotImage = new Image(); 
KursAngebotImage.src = "Bilder/KursAngebot2.gif";
SchulungsorteImage = new Image(); 
SchulungsorteImage.src = "Bilder/Schulungsorte2.gif";
KontaktImage = new Image(); 
KontaktImage.src = "Bilder/Kontakt2.gif";
}