var pref = 'ma' + 'il' + 'to'; 
var attribut = 'hr' + 'ef' + '=';
var first = '%64%65%73%69%67%6E';
var at = '%40';
var last = 'hudzi.de'; 
var first2 = 'design';
var at2 = '@';
var last2 = 'hudzi.de'; 
document.write( '<a ' + attribut + '\'' + pref + ':' + first + at + last + '\'>' ); 
document.write( first2 + '<span style="color: #999999;">' + at2 + last2 + '</span>' );
document.write( '<\/a>' );