function showFeedbackForm() {

	var $feedbackForm = $('#feedbackBox');

// 	var pos = getDeadCentre($('#feedbackBox').width(),$('#feedbackBox').height());
	$('#feedbackBox').css('top', ( $(window).height() - $feedbackForm.height() ) / 2+$(window).scrollTop() + "px");
	$('#feedbackBox').css('left', ( $(window).width() - $feedbackForm.width() ) / 2+$(window).scrollLeft() + "px");

	resetFeedback();
	$feedbackForm.fadeIn('fast');

	return false;
}

function hideFeedbackForm() {

	$('#feedbackBox').fadeOut('fast'); return false
	resetFeedback();

	return false;
}

function submitFeedback() {

	var url          = $('#feedbackURL').val();
	var type         = $('#feedbackType').val();
	var comments     = $('#feedbackComments').val();
	var request_vars = $('#feedbackRequestVars').val();

	$('#feedBackSubmit').attr('disabled','disabled');
	//$('#feedBackCancel').attr('disabled','disabled');
	$('#feedbackResult').attr('class','working');
	$('#feedbackResult').html('Sending feedback, please wait..');
	$('#feedbackResult').fadeIn('fast');

	$.post("/lib/ajax/send_feedback.php", { url: url, type: type, comments: comments, request_vars: request_vars },
	  function(data){
	  $('#feedbackResult').fadeOut('fast');
		if ( data.success ) {
			$('#feedbackResult').attr('class','done');
			$('#feedbackResult').html(data.message);
			$('#feedbackResult').fadeIn('fast');
			$('#feedbackBox').fadeOut(2500,resetFeedback);
		} else {
			$('#feedBackSubmit').removeAttr("disabled");
			//$('#feedBackCancel').removeAttr("disabled");
			$('#feedbackResult').attr('class','error');
			$('#feedbackResult').html(data.message);
			$('#feedbackResult').fadeIn('fast');
		}
	  }, "json");

	return false;

}

function resetFeedback() {
	$('#feedBackSubmit').removeAttr("disabled");
	//$('#feedBackCancel').removeAttr("disabled");
	$('#feedbackComments').val('');
	$('#feedbackResult').hide();
}