var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + "abcdefghijklmnopqrstuvwxyz" + "0123456789+/=";

function decode(emailAddress) {
    var out = "";
    var chr1, chr2, chr3 = "";
    var enc1, enc2, enc3, enc4 = "";
    var i = 0;

    emailAddress = emailAddress.replace(/[^A-Za-z0-9\+\/\=]/g, "");

    do {

        enc1 = keyStr.indexOf(emailAddress.charAt(i++));
        enc2 = keyStr.indexOf(emailAddress.charAt(i++));
        enc3 = keyStr.indexOf(emailAddress.charAt(i++));
        enc4 = keyStr.indexOf(emailAddress.charAt(i++));

        chr1 = (enc1 << 2) | (enc2 >> 4);
        chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
        chr3 = ((enc3 & 3) << 6) | enc4;

        out = out + String.fromCharCode(chr1);

        if (enc3 != 64) {
            out = out + String.fromCharCode(chr2);
        }
        if (enc4 != 64) {
            out = out + String.fromCharCode(chr3);
        }

        chr1 = chr2 = chr3 = "";
        enc1 = enc2 = enc3 = enc4 = "";

    } while (i < emailAddress.length);

    return out;
}

function createlink(anchorElement, emailAddress) {
    anchorElement.href = 'mailto:' + decode(emailAddress);
}