function insertMail() {
    var user='rgrass';
    var domain='lickitysplitco';
    var address=user + '@' + domain + '.com';
    
    var spans=document.getElementsByTagName('span');
    for (x=0; x<spans.length; x++) {
        spans[x].removeChild(spans[x].childNodes[0]);
        
        var new_link=document.createElement('a');
        new_link.href='mai' + 'lto:' + address;
        var new_text=document.createTextNode(address);
        new_link.appendChild(new_text);
        spans[x].appendChild(new_link);
    }
}

addEvent(window,'load',insertMail,false);