function InsertMailToTag(userName, mailSubject) {
    var domainName = "sil.uk.com";
    var EmailId;
    var atSign = "@"
    var fullStop = "&#46";

    EmailId = userName;
    EmailId = "" + EmailId + atSign;
    EmailId = EmailId + domainName;

    document.write("<a href='mail" + "to:" + EmailId + "?subject=" + mailSubject + "' class='anchorEmail'>" + EmailId + "</a>");
}