// JavaScript Document
function aparecer(object)
{
	var left= document.getElementById('menu_'+object);
	document.getElementById(object).style.left= parseFloat(left.offsetParent.offsetLeft)+(parseFloat(left.offsetWidth)/2)+'px';
	document.getElementById(object).style.visibility='visible';
	document.getElementById(object).style.display='block';
}
function desaparecer(object)
{
	document.getElementById(object).style.visibility='hidden';
	document.getElementById(object).style.display='none';
}