telefon = new Image();
telefon.src = "http://www.vnkhe.de/bilder/telefon.jpg";    

telefonH = new Image();
telefonH.src = "http://www.vnkhe.de/bilder/telefonH.jpg"; 

mail = new Image();
mail.src = "http://www.vnkhe.de/bilder/mail.jpg";  

mailH = new Image(); 
mailH.src = "http://www.vnkhe.de/bilder/mailH.jpg"; 


// JavaScript Document
	function imgSwapButton( imageObject, imageName ) {
		
		if( imageName == "telefonH" ) 	
	    	document.getElementById(imageObject).src = telefonH.src;
					
		if( imageName == "telefon" ) 
			document.getElementById(imageObject).src = telefon.src;	
		
		if( imageName == "mailH" ) 	
	    	document.getElementById(imageObject).src = mailH.src;
		
		if( imageName == "mail" ) 
			document.getElementById(imageObject).src = mail.src;	
	
	}