$(function() {
  //trigger ajax on submit
  $('#signup').submit( function(){

	//hide the form
	$('#email').hide();
	$('#submit').hide();

	//show the loading bar
	$('.loader').append($('.bar'));
	$('.bar').css({display:'block'});

	//send the ajax request
	$.post('sign-up.php',{email:$('#email').val()},

	//return the data
	function(data){
	  //hide the graphic
	  $('.bar').css({display:'none'});
	  $('.loader').append(data);
	});

  //stay on the page
  return false;
  });
});