function collapse(obj, group, num){
	lista = obj.parentNode.parentNode;
	obj.className = '';
	
	//alert(lista.getElementsByTagName('li').length);
	grupo = document.getElementById(group);
	//alert(grupo.getElementsByTagName('div').length);
	array = grupo.getElementsByTagName('div');
	tab = lista.getElementsByTagName('li');
	for(i=0; i<array.length; i++){
		tab[i].childNodes[0].className = '';
		array[i].className = '';
	}
	
	tab[num-1].childNodes[0].className = 'active';
	tab[num-1].childNodes[0].blur();
	array[num-1].className = 'show';
}