function showImg(id, nr)
{	
	for(i = 0; i < nr; i++)
		$('poza-' + i).style.display = 'none';			

	$('poza-' + id).style.display = '';		
}  

function expand(id) {
	new Effect.SlideDown(id, {duration: 0.5, queue: {position: 'end', scope: id, limit: 1}, afterFinish: function() { $(id).style.display = ''; } });
}

function close_menu(id) {
	if($(id).style.display != 'none')
		$(id).style.display = 'none';
}