function desplegarMenu(id) {
	var elem = document.getElementById(id);
	elem.style.display = '';
	elem.style.zIndex = 5000;
	elem.parentNode.style.zIndex = 5000;
	var trs = elem.parentNode.getElementsByTagName('tr');
	var imgs = trs[0].getElementsByTagName('img');
	imgs[0].src = '/images/tab_top_left2_act.gif';
	imgs[2].src = '/images/tab_top_right_act.gif';
	trs[0].className = 'pestana-top-activa';
	tds = trs[1].getElementsByTagName('td');	
	tds[0].className = 'pestana-content-activa';	
	tds[0].height = 25;	
}

function recogerMenu(id,activa) {
	var elem = document.getElementById(id);
	elem.style.display = 'none';
	elem.style.zIndex = 0;
	elem.parentNode.style.zIndex = 0;	
	if(!activa) {
		var trs = elem.parentNode.getElementsByTagName('tr');
		var imgs = trs[0].getElementsByTagName('img');
		imgs[0].src = '/images/tab_top_left2.gif';
		imgs[2].src = '/images/tab_top_right.gif';	
		tds = trs[1].getElementsByTagName('td');
		trs[0].className = 'pestana-top';
		tds[0].className = 'pestana-content';
		tds[0].height = 20;	
	}
}