function SendForm(btnID) {
   
   var name = document.getElementById("TextBoxName").value;
   var email = document.getElementById("TextBoxEmail").value;
   var message = document.getElementById("TextBoxMessage").value;

   startSend(btnID);
   
   PageMethods.SendForm(name, email, message, OnSucceeded, OnFailed);
   
}

function OnSucceeded(response) {
   // Dispaly "thank you."
   document.getElementById("MessageStatusConfirm").innerHTML = response;
   document.getElementById("TextBoxName").value = "";
   document.getElementById("TextBoxEmail").value = "";
   document.getElementById("TextBoxMessage").value = "";
   document.getElementById("btnSend").style.display="";
   document.getElementById("uploadButton").style.display="none"; 
   document.getElementById("messageLengthStatus").innerHTML="";
}

function OnFailed(error) {
   // Alert user to the error.
   document.getElementById("btnSend").style.display="";
   document.getElementById("uploadButton").style.display="none"; 
   alert(error.get_message());
}