if(typeof amptracker == 'undefined')
{
    var amptracker = {};
}

amptracker.NowPlaying = new function()
{
    var BASE_URL = 'http://www.amptracker.com/nowplaying/';
    var CONTAINER_ID = 'amptracker_NowPlaying';

    this.currentRating = 0;
    this.currentRatingLabel = '';
    this.revertTimerId = null;

    var head = window.document.getElementsByTagName('head')[0];
    var script = null;

    function addStylesheet()
    {
        var stylesheet = window.document.createElement('link');
        stylesheet.rel = 'stylesheet';
        stylesheet.type = 'text/css';
        stylesheet.href = BASE_URL + 'nowplaying.css';
        stylesheet.media = 'all';
        head.appendChild(stylesheet);
    }

    function sendRequest(uri)
    {
        script = window.document.createElement('script');
        script.type = 'text/javascript';
        script.src = BASE_URL + uri + '&seed=' + new Date().getTime();
        head.appendChild(script);
    }

    function updateContent()
    {
        sendRequest('update.php?username=omr128UK&image=http%3A%2F%2Foffshoremusicradio.com%2Fimages%2Flogosq60.gif&listenLink=http%3A%2F%2Foffshoremusicradio.com%2Flisten.htm&amazonId=http%3A%2F%2Fastore.amazon.com%2Foffsmusiradi-20&ratings=true&');
    }

    this.update = function(content)
    {
        if(content)
        {
            var container = window.document.getElementById(CONTAINER_ID);
            container.innerHTML = content;
            container.style.display = 'block';
        }
        if(script)
        {
            head.removeChild(script);
        }
    }

    this.setCurrentRating = function(rating)
    {
        this.currentRating = rating;
    }

    this.setCurrentRatingLabel = function(ratingLabel)
    {
        this.currentRatingLabel = ratingLabel;
    }

    this.ratingMouseOver = function(rating)
    {
        if(this.revertTimerId) window.clearTimeout(this.revertTimerId);
        this.revertTimerId = null;
        for(var i = 1; i <= 5; i++)
        {
            window.document.getElementById('amptracker_NowPlaying_rating_' + i).src = i <= rating ? 'http://www.amptracker.com/images/stars/red-on.gif' : 'http://www.amptracker.com/images/stars/red-off.gif';
        }
        window.document.getElementById('amptracker_NowPlaying_ratingLabel').
innerHTML = 'Rate this: ' + rating;
    }

    this.ratingMouseOut = function()
    {
        var currentRating = this.currentRating;
        var currentRatingLabel = this.currentRatingLabel;
        var revert = function()
        {
            for(var i = 1; i <= 5; i++)
            {
                var starImg = 'red' + (currentRating > i - 0.75 ? (currentRating > i - 0.25 ? '-on.gif' : '-half.gif') : '-off.gif');
                window.document.getElementById('amptracker_NowPlaying_rating_' + i).src = 'http://www.amptracker.com/images/stars/' + starImg;
            }
            window.document.getElementById('amptracker_NowPlaying_ratingLabel').innerHTML = currentRatingLabel;
        }
        this.revertTimerId = window.setTimeout(revert, 100);
    }

    this.ratingClick = function(rating)
    {
        for(var i = 1; i <= 5; i++)
        {
            var ratingImg = window.document.getElementById('amptracker_NowPlaying_rating_' + i);
            ratingImg.onmouseover = null;
            ratingImg.onmouseout = null;
            ratingImg.onclick = null;
        }
        sendRequest('update.php?username=omr128UK&image=http%3A%2F%2Foffshoremusicradio.com%2Fimages%2Flogosq60.gif&listenLink=http%3A%2F%2Foffshoremusicradio.com%2Flisten.htm&amazonId=http%3A%2F%2Fastore.amazon.com%2Foffsmusiradi-20&ratings=true&&rating=' + rating);
    }

    addStylesheet();
    document.write('<div id="' + CONTAINER_ID + '" ></div>');
    updateContent();


window.setInterval(updateContent, 60000);


}