function marcar_seccion(id){

	document.getElementById(id).className="seccion_actual";

}





function amplia_foto(foto){
	window.open("ampliar_foto.php?foto="+foto,"Ampliar",'width=667,height=545,resizable=yes,scrollbars=yes,top=0,left=0');

}

function amplia_fotos(foto){
	window.open("ampliar_fotos.php?foto="+foto,"Ampliar",'width=667,height=545,resizable=yes,scrollbars=yes,top=0,left=0');

}

function swapBlack()
{
	var oBack = document.getElementById("blackcover");
	var oData = document.getElementById("contenedor2");

	oBack.style["visibility"]="hidden";
	oData.style["visibility"]="visible";
}