var pref = 'ma' + 'il' + 'to'; 
var attribut = 'hr' + 'ef' + '='; 
var first = '%69%6E%66%6F'; 
var at = '%40'; 
var last = 'ero-sicherheit.de'; 
var first2 = 'info'; 
var at2 = '@'; 
var last2 = 'ero-sicherheit.de'; 
document.write( '<a ' + attribut + '\'' + pref + ':' + first + at + last + '\'>' ); 
document.write( first2 + at2 + last2 ); document.write( '<\/a>' );