https://www.theater-plauen-zwickau.de/javascript/smae.js?v1

1var keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
2	 	
3function smae_decode(m){ document.location.href='mailto:' + decode64(m).replace("&","%26"); }
4 
5function decode64(input) {
6	
7	var output = '';
8	var chr1, chr2, chr3 = '';
9	var enc1, enc2, enc3, enc4 = '';
10	var i = 0;
11	  
12	input = input.replace(/[^A-Za-z0-9\+\/\=]/g, '');
13	  
14	do {
15		enc1 = keyStr.indexOf(input.charAt(i++));
16		enc2 = keyStr.indexOf(input.charAt(i++));
17		enc3 = keyStr.indexOf(input.charAt(i++));
18		enc4 = keyStr.indexOf(input.charAt(i++));
19		  
20		chr1 = (enc1 << 2) | (enc2 >> 4);
21		chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
22		chr3 = ((enc3 & 3) << 6) | enc4;
23		  
24		output = output + String.fromCharCode(chr1);
25		  
26		if (enc3 != 64) {
27		
28			output = output + String.fromCharCode(chr2);
29		}
30		if (enc4 != 64) {
31		
32			output = output + String.fromCharCode(chr3);
33		}
34		  
35		chr1 = chr2 = chr3 = '';
36		enc1 = enc2 = enc3 = enc4 = '';
37  
38	} while (i < input.length);
39      
40	return unescape(output);
41}