window.addEvent('domready', function() {

	var panel = new Fx.Tween('coverlogin', {duration: 'long'});
	
	var panelHeight = $('coverlogin').getHeight();
	
	panel.start('height', 0);
	
	$('show_panel').addEvent('click', function(e) {
		panel.start('height', panelHeight);
	});
	
	$('hide_panel').addEvent('click', function(e) {
		panel.start('height', 0);
	});
	
});