(function($){
    //Resize image on ready or resize
    $.fn.supersize = function() {   
        //Invoke the resizenow() function on document ready
        $(document).ready(function() {
        
            $('#supersize').resizenow(); 
            //Invoke the resizenow() function on browser resize
	        $(window).bind("resize", function() {
	            $('#supersize').resizenow(); 
	        });
	        
        });
    };
    //Adjust image size
    $.fn.resizenow = function() {
        //Define starting width and height values for the original image
        var startwidth = parseInt($(this).find('img').width());  
        var startheight = parseInt($(this).find('img').height());
        //Define image ratio
        var ratio = startheight/startwidth;
        //Gather browser dimensions
        var browserwidth = $(window).width();
        var browserheight = $(window).height();

        //Resize image to proper ratio
        if ((browserheight/browserwidth) > ratio) {
            $(this).css('height', browserheight);
            $(this).css('width', browserheight / ratio);
            $(this).children().height(browserheight);
            $(this).children().width(browserheight / ratio);
        } else {
            $(this).css('width', browserwidth);
            $(this).css('height', browserwidth * ratio);
            $(this).children().width(browserwidth);
            $(this).children().height(browserwidth * ratio);
        }
        //Make sure the image stays center in the window
        $(this).children().css('left', (browserwidth - $(this).width())/2);
        $(this).children().css('top', (browserheight - $(this).height())/2);
    };
})(jQuery);

$(document).ready(function() {
    $("div#supersize").supersize();
});