function SubmitEnquiry()
{
  // create error messages in the event of an error
  var message = "The following fields are required:\n";
  var message2 = "";
  
  // check the required fields
  if(document.getElementById('name').value == "")
  {
    message2 += "\n - Name";
  }
  
  if(document.getElementById('email').value == "")
  {
    message2 += "\n - Email";
  }
  
  if(document.getElementById('telephone').value == "")
  {
    message2 += "\n - Telephone";
  }

  if(document.getElementById('enquiry').value == "")
  {
    message2 += "\n - Enquiry";
  }
  
  // now check to see if any errors were raised
  if(message2 == "")
  {
    // no errors so submit
    document.EnquiryForm.submit();
  }
  else
  {
    // we have errors so display these
    alert(message + message2);
  }
}