/*
Supersized - Full Screen Background/Slideshow jQuery Plugin
supersized.1.0.js
February 2009
By Sam Dunn
www.buildinternet.com / www.onemightyroar.com
*/
(function($){
        //Resize image on ready or resize
        $.fn.supersized = function() {
                var options = $.extend($.fn.supersized.defaults, $.fn.supersized.options);
                if (options.slideshow == 1){
                        setInterval("theslideshow()", options.slideinterval);
                }
                $().ready(function() {
                        $('#supersize').resizenow();
                });
                $(window).bind("resize", function(){
                    $('#supersize').resizenow();
                });
        };
        //Adjust image size
        $.fn.resizenow = function() {
                var options = $.extend($.fn.supersized.defaults, $.fn.supersized.options);
                  return this.each(function() {
                        //Define image ratio & minimum dimensions
                        var minwidth = options.minsize*(options.startwidth);
                        var minheight = options.minsize*(options.startheight);
                        var ratio = options.startheight/options.startwidth;
                        //Gather browser and current image size
                        var imagewidth = $(this).width();
                        var imageheight = $(this).height();
                        var browserwidth = $(window).width();
                        var browserheight = $(window).height();
                        //Check for minimum dimensions
                        if ((browserheight < minheight) && (browserwidth < minwidth)){
                                $(this).height(minheight);
                                $(this).width(minwidth);
                        }
                        else{
                                //When browser is taller
                                if (browserheight > browserwidth){
                                    imageheight = browserheight;
                                    $(this).height(browserheight);
                                    imagewidth = browserheight/ratio;
                                    $(this).width(imagewidth);
                                    if (browserwidth > imagewidth){
                                            imagewidth = browserwidth;
                                            $(this).width(browserwidth);
                                            imageheight = browserwidth * ratio;
                                            $(this).height(imageheight);
                                    }
                                }
                                //When browser is wider
                                if (browserwidth >= browserheight){
                                    imagewidth = browserwidth;
                                    $(this).width(browserwidth);
                                    imageheight = browserwidth * ratio;
                                    $(this).height(imageheight);
                                    if (browserheight > imageheight){
                                            imageheight = browserheight;
                                            $(this).height(browserheight);
                                            imagewidth = browserheight/ratio;
                                            $(this).width(imagewidth);
                                    }
                                }
                        }
                        return false;
                });
        };
        $.fn.supersized.defaults = {
                        startwidth: 720,
                        startheight: 576,
                        minsize: .5,
                        slideshow: 1,
                        slideinterval: 5000
        };
})(jQuery);
//Slideshow Add-on
function theslideshow() {
    var currentslide = $('#supersize .activeslide');
    if ( currentslide.length == 0 ) currentslide = $('#supersize :last');
    var nextslide =  currentslide.next().length ? currentslide.next() : $('#supersize :first');
    nextslide.addClass('activeslide');
    currentslide.removeClass('activeslide');
}