home_but_1 = new Image();
home_but_1.src = "bilder/but_home1.png";
home_but_2 = new Image();
home_but_2.src = "bilder/but_home2.png";
list_but_1 = new Image();
list_but_1.src = "bilder/but_list1.png";
list_but_2 = new Image();
list_but_2.src = "bilder/but_list2.png";
expo_but_1 = new Image();
expo_but_1.src = "bilder/but_expo1.png";
expo_but_2 = new Image();
expo_but_2.src = "bilder/but_expo2.png";
maps_but_1 = new Image();
maps_but_1.src = "bilder/but_maps1.png";
maps_but_2 = new Image();
maps_but_2.src = "bilder/but_maps2.png";
stats_but_1 = new Image();
stats_but_1.src = "bilder/but_stats1.png";
stats_but_2 = new Image();
stats_but_2.src = "bilder/but_stats2.png";
info_but_1 = new Image();
info_but_1.src = "bilder/but_info1.png";
info_but_2 = new Image();
info_but_2.src = "bilder/but_info2.png";

function tausch(picname,showimage) {
  document.images[picname].src = eval(showimage+ ".src");
}
function UnCryptMailto(s, shift) {
	var n=0;
	var r="";
	for(var i=0;i<s.length;i++) { 
		n=s.charCodeAt(i); 
		if (n>=8364) {n = 128;}
		r += String.fromCharCode(n-(shift)); 
	}
	return r;
}
function highlight(id){
 document.getElementById(id).className='spalte_highlight';
}
 function normal(id){
 document.getElementById(id).className='spalte_normal';
}
function linkTo_UnCryptMailto(s, shift)	{
	location.href=UnCryptMailto(s, shift);
}