function ocultarCapas()
{
	var mCapas=new Array();
	mCapas[0]="h01g";
	mCapas[1]="h02g";
	mCapas[2]="h03g";
	mCapas[3]="h04g";
	mCapas[4]="h05g";
	mCapas[5]="h06g";
	mCapas[6]="h07g";
	mCapas[7]="h08g";
	mCapas[8]="h09g";
	mCapas[9]="h10g";
	mCapas[10]="h11g";
	mCapas[11]="h12g";

		
	var i;
	for (i=0; i<mCapas.length; i++)
	{
		document.getElementById(mCapas[i]).style.visibility ="hidden"; // Firefox
		if (document.all)document.all(mCapas[i]).style.visibility="hidden"; // IE
	}
	
}

function mostrarCapa(capa_e)
{
	ocultarCapas();
	document.getElementById(capa_e).style.visibility ="visible";
	if (document.all)document.all(capa_e).style.visibility="visible";
}