var scramble_addr = 'office_klammeraffe_langauer_punkt_at';

function get_addr(){
var re= /_klammeraffe_/gi;
scramble_addr = scramble_addr.replace(re,'@');
var re= /_punkt_/gi;
scramble_addr = scramble_addr.replace(re,'.');
var aufruf="mai" + "lto" +":"+scramble_addr+"";
window.location=aufruf;

}