function emfunc($user,$dom,$ext,$linkt,$subj) {
    var tag1 = "mail"; 
    var tag2 = "to:"; 
    var email1 = $user; 
    var email2 = $dom; 
    var email3 = $ext; 
    if ($subj == null) {
        var subject = ""; 
    } else {
        var subject = $subj;
    }
    var cc = ""; 
    var bcc = ""; 
    if ($linkt == null) {
        var link = email1 + "@" + email2 + email3; 
    } else {
        var link = $linkt;
    }

    document.write("<a h" + "ref=\"" + tag1 + tag2 + email1 + "@" + email2 + email3 + "\">" + link + "</a>");
}