$(document).ready(function(){

	// disable the submit button until the username and password are entered
	$('#login_submit').attr('disabled','disabled');
	$('#login_username,#login_password').keyup(function () {
		$('#login_submit').attr(
			'disabled',!$('#login_username').val()||!$('#login_password').val()
		);
	}).trigger("keyup");

	$('form').submit(function(){
		// disable the submit button
		$('#login_submit').attr('disabled','disabled');
		// hide the form
		$('form#login').attr('display','none');
		// show a message
		$('#login_message').html('<p>Logging in...</p>');
		return true;
	});

});