function emailSubmit() {
    var txtEmailSubs = "";
    
    txtEmailSubs = document.getElementById("txtSubscribe").value;
    
    if (txtEmailSubs == "") {
        document.getElementById("status").style.display = "";
        document.getElementById("status").innerHTML = "<span style='color:#FFFFFF;font-size: 10px;'><b>email masih kosong</b></span>";
        document.getElementById("txtSubscribe").focus();
        return;
    }
  
    WCFContent.JSON_emailSubscribe(txtEmailSubs, submitComplete);
}

function submitComplete(result) {
    if (result == "") {
        document.getElementById("status").style.display = "";
        document.getElementById("status").innerHTML = "<span style='color:#FFFFFF;font-size: 10px;'><b>sukses subscribe</b></span>";
    }
    else {
      document.getElementById("status").style.display = "";
        document.getElementById("status").innerHTML = "<span style='color:#FFFFFF;font-size: 10px;'><b>anda sudah terdaftar</b></span>";
    }

}