var LoginForm = Class.create();

LoginForm.init = function () {
	if ($('login')) {
		Event.observe('login', 'submit', LoginForm.submit);
	}
};

LoginForm.submit = function(e) {
	if ($('member_username').value==$('member_username').alt) {
		Event.stop(e);
		if ($$('#login .form_error').length == 0)
		{
			$('login').insert({top: '<div class="form_error">Please enter your username and password</div>'});
		} 
		$('member_username').addClassName('error').focus();
	}
}

document.observe("dom:loaded", LoginForm.init);