function load() {
        if (GBrowserIsCompatible()) {
            var map = new GMap2(document.getElementById("map"));

            gdir = new GDirections(map, document.getElementById("directions"));
            GEvent.addListener(gdir, "error", handleErrors);

........

        }
    }

    function setDirections(fromAddress, toAddress, locale) {
//        alert (fromAddress + " : " + toAddress + " : " + locale);
        gdir.load("from: '" + fromAddress + "' to: " + toAddress, { "locale": locale });
        document.getElementById("distancia").value = gdir.getDistance().meters; 
    }