$(document).ready(function()  {
    $('input[name="url"]').attr('name', 'Url').parent().parent().hide();
    $('input[name="contact_name"]').attr('name','Contact_Name');
    $('input[name="phone_number"]').attr('name','Phone_Num');
    $('input[name="email_address"]').attr('name','Email_Address');
});