(function() {
    /*
    var W = this, D = this.document;
    
    $('html').attr('id', 'js');
    */
	
    $(document).ready(function () {
        
        $("#navigation a").hover(function(){
            var img = $(this).find("img");
            if (img.css("filter") != "none" && img.css("filter") != "") {
                var filterSrcOff = img.css("filter");
                var filterSrcOn = filterSrcOff.replace(/-off/,"-on");
                img.css("filter", filterSrcOn);
            } else {
                var imgSrcOff = img.attr("src");
                var imgSrcOn = imgSrcOff.replace(/-off/,"-on");
                img.attr("src",imgSrcOn);
            }
        },
        function(){
            if (!$(this).hasClass("on")) {
                var img = $(this).find("img");
                if (img.css("filter") != "none" && img.css("filter") != "") {
                    var filterSrcOn = img.css("filter");
                    var filterSrcOff = filterSrcOn.replace(/-on/,"-off");
                    img.css("filter", filterSrcOff);
                } else {
                    var imgSrcOn = img.attr("src");
                    var imgSrcOff = imgSrcOn.replace(/-on/,"-off");
                    img.attr("src",imgSrcOff);
                }
            }
        });
        
    });
	
})(jQuery);