function obrir_mapa(url) {
ajuda=window.open (url,"auxiliar","toolbar=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=630,height=450")

        }
function obrir_mapa2(url) {
plana="http://www.altanet.org/territori/sertec/carreteres/mapes/"+url;
ajuda=window.open (plana,"auxiliar","toolbar=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=630,height=450")

        }