function hideMenu(div_id_atual){
var divIdAtual = div_id_atual;

	for(i=1; i<5; i++){
		if(document.getElementById("div_menu_"+i)){
			if(("div_menu_"+i) != divIdAtual ){
			document.getElementById("div_menu_"+i).style.display='none';
			document.getElementById("div_menu_"+i).style.visibility='hidden';
			}
		}
	}

}