(function($) {
    var buildRating = function(obj) {
        var rating = averageRating(obj),
        obj    = buildInterface(obj),
        stars  = $("div.star", obj),
        cancel = $("div.cancel", obj)

        var fill = function() {
            drain();
            $("a", stars).css("width", "100%");
            stars.lt(stars.index(this) + 1).addClass("hover");
        },
        drain = function() {
            stars.removeClass("on").removeClass("hover");
        },
        reset = function() {
            drain();
            stars.lt(rating[0]).addClass("on");
            if(percent = rating[1] ? rating[1] * 10 : null) {
                stars.eq(rating[0]).addClass("on").children("a").css("width", percent + "%");
            }
        },
        cancelOn = function() {
            drain();
            $(this).addClass("on");
        },
        cancelOff = function() {
            reset();
            $(this).removeClass("on")
        }

        stars
        .hover(fill, reset).focus(fill).blur(reset)
        .click(function() {
            $.post(obj.url, { rating: stars.index(this) + 1 },function(data) {
                rating = [data, 0];
                reset(); stars.unbind().addClass("done");
                $(this).css("cursor", "default");
                return false;
            }); 

        });

        reset();
        return obj;

    }

    var buildInterface = function(form) {
        var container = $("<div></div>").attr({"title": form.title, "class": form.className});
        $.extend(container, {url: form.action})
        var optGroup  = $("option", $(form));
        var size      = optGroup.length;
        optGroup.each(function() {
            container.append($('<div class="star"><a href="#' + this.value + '" title="Give it ' + this.value + '/'+ size +'">' + this.value + '</a></div>'));
        });
        $(form).after(container).remove();
        return container;
    }

    var averageRating = function(el) { return el.title.split(":")[1].split(".") }

    $.fn.rating = function() { return $($.map(this, function(i) { return buildRating(i)[0] })); }

    if ($.browser.msie) try { document.execCommand("BackgroundImageCache", false, true)} catch(e) { }

})(jQuery)