function ChangelogAssistant(changelog)
{
    this.justChangelog = changelog;

    // on first start, this message is displayed, along with the current version message from below
    this.firstMessage = $L('Welcome, and thank you for downloading Your Radio, the only radio for webOS that lets you decide what you play!');

    this.secondMessage = $L('Thank you for updating Your Radio, please read the changelog below.');

    // on new version start
    this.newMessages =
    [
     // Don't forget the comma on all but the last entry
     { version: '0.0.33',log: [ 'Added Changelog scene' ] }
     ];

     // setup command menu
     this.cmdMenuModel =
    {
        visible: false,
        items:
        [
            {},
            {
                label: $L("Ok, I've read this. Let's continue ..."),
                command: 'do-continue'
            },
            {}
         ]
    };
}

ChangelogAssistant.prototype.setup = function() {
    // set title
    if (this.justChangelog)
    {
        this.titleContainer.innerHTML = $L('Changelog');
    }
    else
    {
        if (vers.isFirst) {
            this.titleContainer.innerHTML = $L('Welcome To Your Radio');
        }
        else if (vers.isNew) {
            this.titleContainer.innerHTML = $L('Your Radio Changelog');
        }
    }
    // build data
    var html = '';
    if (this.justChangelog)
    {
        for (var m = 0; m < this.newMessages.length; m++)
        {
            html += Mojo.View.render({object: {title: 'v' + this.newMessages[m].version}, template: 'changelog/changeLog'});
            html += '<ul>';
            for (var l = 0; l < this.newMessages[m].log.length; l++)
            {
                html += '<li>' + this.newMessages[m].log[l] + '</li>';
            }
            html += '</ul>';
        }
    }
    else
    {
        if (vers.isFirst)
        {
            html += '<div class="text">' + this.firstMessage + '</div>';
        }
        if (vers.isNew)
        {
            if (!this.justChangelog)
            {
                html += '<div class="text">' + this.secondMessage + '</div>';
            }
            for (var m = 0; m < this.newMessages.length; m++)
            {
                html += Mojo.View.render({object: {title: 'v' + this.newMessages[m].version}, template: 'changelog/changeLog'});
                html += '<ul>';
                for (var l = 0; l < this.newMessages[m].log.length; l++)
                {
                    html += '<li>' + this.newMessages[m].log[l] + '</li>';
                }
                html += '</ul>';
            }
        }
    }

    // set data
    this.dataContainer.innerHTML = html;
};

ChangelogAssistant.prototype.activate = function(event) {
    if (!this.justChangelog) {
        // start continue button timer
        this.timer = this.controller.window.setTimeout(this.showContinue.bind(this), 5 * 1000);
    }
};

ChangelogAssistant.prototype.showContinue = function() {
    // show the command menu
    this.controller.setMenuVisible(Mojo.Menu.commandMenu, true);
};

ChangelogAssistant.prototype.handleCommand = function(event) {
    if (event.type == Mojo.Event.command) {
    switch (event.command) {
    case 'do-continue':
    this.controller.stageController.swapScene({name: 'main', transition: Mojo.Transition.crossFade});
    break;
    }
    }
}

ChangelogAssistant.prototype.deactivate = function(event) {
    /* remove any event handlers you added in activate and do any other cleanup that should happen before
       this scene is popped or another scene is pushed on top */
};

ChangelogAssistant.prototype.cleanup = function(event) {
    /* this function should do any cleanup needed before the scene is destroyed as
       a result of being popped off the scene stack */
};