function highlightImage(name){
		
		var Kontrolle = '.*?' + name + '.jpg$';					  
		if(document.getElementById(name).src.match(Kontrolle)){
			document.getElementById(name).src = 'images/' + name + '_on.jpg';
		}
	}
	function normalizeImage(name){
		if(sActualImage != name){
			document.getElementById(name).src = 'images/' + name + '.jpg';
		}
	}