var capa
		
<!-- Mustra y oculta capas -->
function submenu(idCapa) {
	if (document.layers) capa = eval("document." + idCapa);
 	if (document.all) capa = eval(idCapa + ".style");
	if (document.getElementById) capa = eval('document.getElementById("' + idCapa + '").style');
  
 	if ((capa.visibility == "hidden") || (capa.visibility == "hide")) {
 		capa.visibility = (document.layers) ? "show" : "visible" ;
 		capa.position = "relative";
	}
  	
 	else {
		capa.visibility = (document.layers) ? "hide" : "hidden" ;
		capa.position = "absolute";
 	}
 
}