<script src="http://yui.yahooapis.com/3.1.0/build/yui/yui-min.js"></script>

YUI({
    //Last Gallery Build of this module
    gallery: 'gallery-2009.12.15-22'
}).use('gallery-history-lite', 'console', function (Y) {
 
    // Create a logging console so we can watch the awesomeness happen.
    Y.one(document.body).addClass('yui-skin-sam');
    new Y.Console().render();
 
    // Listen for history changes.
    Y.on('history-lite:change', function (e) {
        // Properties on e.changed represent new or changed history parameters.
        Y.each(e.changed, function (value, name) {
            Y.log(name + ' changed to "' + value + '"', 'debug', 'history-lite');
        });
 
        // Properties on e.removed represent history parameters that have been
        // removed.
        Y.each(e.removed, function (value, name) {
            Y.log(name + ' was removed', 'debug', 'history-lite');
        });
 
        // The get() method returns the current value of the specified history
        // parameter. If you call get() without specifying a parameter name,
        // it'll return an object containing all current history parameters and
        // their values.
        Y.log('current value of foo is ' + Y.HistoryLite.get('foo'), 'debug', 'history-lite');
    });
 
    // Simulate some history change events (watch the browser's location bar and
    // the debug console to see what's happening).
    setTimeout(function () {
        // The add() method accepts an object containing key/value pairs of
        // history parameter names and values. Each call to add() creates a new
        // browser history entry.
        Y.HistoryLite.add({foo: 'bar', baz: 'quux'});
    }, 1000);
 
    setTimeout(function () {
        // The add() method will also accept a query string.
        Y.HistoryLite.add('foo=kittens');
    }, 2000);
 
    setTimeout(function () {
        // A null or undefined value causes that parameter to be removed from
        // the history state.
        Y.HistoryLite.add({foo: null, baz: 'monkeys'});
    }, 3000);
 
});