function email() {
if (!document.getElementsByTagName) return;
var anchors = document.getElementsByTagName("a");
for (var i = 0; i < anchors.length; i++) {
    var anchor = anchors[i];
    if (anchor.getAttribute("href") &&
        anchor.getAttribute("rel") == "email") {
        anchor.href = "mail" + "to:" + 
                  "%6D%61%63%68%79"+"%40"+"%6D%75%6C%74%69%74%65%6C%2E%62%65";
    }
}
}