var messageDelay = 2000;  // How long to display status messages (in milliseconds)

// Init the form once the document is ready
$( init );


// Initialize the form

function init() {

  // Hide the form initially.
  // Make submitForm() the form's submit handler.
  // Position the form so it sits in the centre of the browser window.
  $('#contactForm').hide().submit( submitForm ).addClass( 'positioned' );

  // When the "Send us an email" link is clicked:
  // 1. Fade the content out
  // 2. Display the form
  // 3. Move focus to the first field
  // 4. Prevent the link being followed

  $('a[href="#contactForm"]').click( function() {
    $('#container').fadeTo( 'slow', .2 );
    $('#contactForm').fadeIn( 'slow'/*, function() {
      $('#senderName').focus();
    }*/ )
    return false;
  } );
  
  // When the "Cancel" button is clicked, close the form
  $('#cancel').click( 
	function() { 
	  $('#contactForm').fadeOut();
	  $('#container').fadeTo( 'slow', 1 );
	} 
  );  

  // When the "Escape" key is pressed, close the form
  $('#contactForm').keydown( 
	function( event ) 
	{
  	  if ( event.which == 27 ) 
	  {
	    $('#contactForm').fadeOut();
	    $('#container').fadeTo( 'slow', 1 );
	  }
	} 
  );
}


// Submit the form via Ajax

function submitForm() 
{
  var contactForm = $(this);

  // Are all the fields filled in?

  if ( !$('#senderName').val() || !$('#senderEmail').val() || !$('#message').val() ) 
  {
    // No; display a warning message and return to the form
    $('#incompleteMessage').fadeIn().delay(messageDelay).fadeOut();
    contactForm.fadeOut().delay(messageDelay).fadeIn();

  } 
  else 
  {
    // Yes; submit the form to the PHP script via Ajax

    $('#sendingMessage').fadeIn();
    contactForm.fadeOut();

    $.ajax( {
      url: contactForm.attr( 'action' ) + "?ajax=true",
      type: contactForm.attr( 'method' ),
      data: contactForm.serialize(),
      success: submitFinished
    } );
  }

  // Prevent the default form submission occurring
  return false;
}


// Handle the Ajax response

function submitFinished( response ) 
{
  response = $.trim( response );
  $('#sendingMessage').fadeOut();

  if ( response == "success" ) 
  {
    // Form submitted successfully:
    // 1. Display the success message
    // 2. Clear the form fields
    // 3. Fade the 	 back in

    $('#successMessage').fadeIn().delay(messageDelay).fadeOut();
    $('#senderName').val( "" );
    $('#senderEmail').val( "" );
    $('#message').val( "" );

    $('#container').delay(messageDelay+500).fadeTo( 'slow', 1 );

  } 
  else 
  {
    // Form submission failed: Display the failure message,
    // then redisplay the form
    $('#failureMessage').fadeIn().delay(messageDelay).fadeOut();
    $('#contactForm').delay(messageDelay+500).fadeIn();
  }
}