Make form required, yet still display the default values

Hi,

How can I make my form have required fields when using default values?

For aesthetics, I have the labels hidden and I'm using values to display / direct the user for which information I want ( name & email ). In my form I have both fields set to "required".

Currently, if you click the button "request an invitation" it will submit. However, I want to make sure that people input their name and/or at least their e-mail address before the form will actually submit. Is there a way to use default values, but make it so people have to enter in new text?

You can see the form on my hope page: http://virtuecard.org

Thanks!

Thanks, David.

I'm confused. Can you please help me further?

This form I'm using is form "13" and only has those two fields which are field 4 (name) and field 3 (email).

Specifically, what code do I need to add to make this work and where do I put it?

Can you please help me? Here's what I tried, but it didn't work.

First, you can view the form at http://www.virtuecard.org. All I want, are for the fields to be required, but since I'm using default values someone can click the "request an invitation" button and it will submit the default values "name" and "email". However, if they do click this I want it to give an error message. Make sense?

The form ID is 13 and the "name" field is field 4 and the "email" field is field 3.

Here's the code I added to my functions.php file that didn't work. I only attempted fixing field 4, but since that didn't work, I didn't code out for field 3 yet.

Can you please tell me the correct code I should use?
-----

<?php

add_filter('gform_validation_13', 'custom_validation');
function custom_validation($validation_result){
$form = $validation_result["form"];

//supposing we don't want input 1 to be a value of 86
if($_POST['input_4'] == name){

// set the form validation to false
$validation_result["is_valid"] = false;

//finding Field with ID of 1 and marking it as failed validation
foreach($form["fields"] as &$field){

//NOTE: replace 1 with the field you would like to validate
if($field["id"] == "4"){
$field["failed_validation"] = true;
$field["validation_message"] = "This field is invalid!";
break;
}
}

}

//Assign modified $form object back to the validation result
$validation_result["form"] = $form;
return $validation_result;

}

?>