function mostrar(nomCapa){
	
	var capa;

	var Ncapa="g_foto"+nomCapa;
	
	if (navigator.appName=="Microsoft Internet Explorer"){
		capa=document.all(Ncapa);	      

      capa.style.visibility='visible'; 
	}
	else {
      document.layers.eval(Ncapa).visibility="show";	   
	}
	
}

function ocultar(nomCapa){
	
	var capa;
		
	var Ncapa="g_foto"+nomCapa;	
	
	if (navigator.appName=="Microsoft Internet Explorer"){
		capa=document.all(Ncapa);	      
		capa.style.visibility='hidden'; 
	}
	else {
      document.layers.eval(Ncapa).visibility="hide";
	}
	
}