stdImages = new Array();
	stdImages["willkommen"] = new Image();
	stdImages["willkommen"].src = "img/willkommen.gif";
	stdImages["Friedemann-Dipper"] = new Image();
	stdImages["Friedemann-Dipper"].src = "img/Friedemann-Dipper.gif";
	stdImages["Unterricht"] = new Image();
	stdImages["Unterricht"].src = "img/Unterricht.gif";
	stdImages["Angebote"] = new Image();
	stdImages["Angebote"].src = "img/Angebote.gif";
	stdImages["Konzerte"] = new Image();
	stdImages["Konzerte"].src = "img/Konzerte.gif";
	stdImages["Links"] = new Image();
	stdImages["Links"].src = "img/Links.gif";
	stdImages["Kontakt"] = new Image();
	stdImages["Kontakt"].src = "img/Kontakt.gif";
	stdImages["Impressum"] = new Image();
	stdImages["Impressum"].src = "img/Impressum.gif";
	stdImages["Klavier"] = new Image();
	stdImages["Klavier"].src = "img/Klavier.jpg";
	
	rollImages = new Array();
	rollImages["willkommen"] = new Image();
	rollImages["willkommen"].src = "img/willkommen1.gif";
	rollImages["Friedemann-Dipper"] = new Image();
	rollImages["Friedemann-Dipper"].src = "img/Friedemann-Dipper1.gif";
	rollImages["Unterricht"] = new Image();
	rollImages["Unterricht"].src = "img/Unterricht1.gif";
	rollImages["Angebote"] = new Image();
	rollImages["Angebote"].src = "img/Angebote1.gif";
	rollImages["Konzerte"] = new Image();
	rollImages["Konzerte"].src = "img/Konzerte1.gif";
	rollImages["Links"] = new Image();
	rollImages["Links"].src = "img/Links1.gif";
	rollImages["Kontakt"] = new Image();
	rollImages["Kontakt"].src = "img/Kontakt1.gif";
	rollImages["Impressum"] = new Image();
	rollImages["Impressum"].src = "img/Impressum1.gif";
	rollImages["Klavier"] = new Image();
	rollImages["Klavier"].src = "img/Klavier1.jpg";
	
	function rollImage(argument_pna){
	  document.images[argument_pna].src = rollImages[argument_pna].src;
	}
	
	function restoreImage(argument_pna) {
	  document.images[argument_pna].src = stdImages[argument_pna].src;
	}