(function() {

var sat = {

    last_id: false,

    failed: [],

    cache: [],

    log: function(url, res, id) {

        var l;

        l = document.createElement('div');
        l.innerHTML = (res ? 'OK ' : '!!') + ' - ' + url;
        var s = l.style;
        s.textAlign = 'left';
        s.color = (res) ? 'black' : 'red';
        s.background = 'white';
        s.padding = '5px;';
        s.fontSize = '12px';
        document.body.appendChild(l);
        scrollTo(0, document.body.offsetHeight);

    },

    callback: function (url, res, id) {

        sat.log(url, res, id);

        if (!res) {
            sat.failed[url] = 1;
        }


        if (id === sat.last_id) {
            alert('Done! Pull the plug, turn off the modem, disable wireless and go read offline');
            sat.mark();
        }

    },

    mark: function() {

        for (var i = 0, max = links.length; i < max; i++) {

            if (sat.failed[links[i].href]) {
                links[i].style.textDecoration = 'line-through';
            }

        }



    }
};

try {
    var factory;
    if (typeof GearsFactory != 'undefined') {
        factory = new GearsFactory();
    } else {
        factory = new ActiveXObject('Gears.Factory');
    }

    var srv = factory.create('beta.localserver', '1.0');

} catch (e){
    alert('You need to install/enable Google Gears if you want this to work');
    return;
}

var store_name = document.location.href.toString().replace(/\W/g,'');

srv.removeStore(store_name);
srv.openStore(store_name);

var store = srv.createStore(store_name);

var links = document.getElementsByTagName('a');

for (var i = 0, max = links.length; i < max; i++) {

    if (sat.cache[links[i].href]) {
        continue;
    }

    sat.cache[links[i].href] = 1;

    try{
        sat.last_id = store.capture(links[i].href, sat.callback);
    } catch (e){
        sat.failed[links[i].href] = 1;
        sat.log(links[i].href, false);
    }

}

})();