function showLoginDiv(id, img){
	if (document.getElementById(id).style.display == 'none') {
		new Effect.Opacity(id, {
			from: 0,
			to: 0.6
		});
		Effect.SlideDown(id, {
			duration: 0.6
		});
		document.getElementById(img).src = 'fileadmin/templates/gfx/arrup.gif';
	}
	else {
		Effect.SlideUp(id, {
			duration: 0.6
		});
	document.getElementById(img).src = 'fileadmin/templates/gfx/arrdown.gif';
	}
}