$(document).ready(function() {
    $("#wr_gallery img, #wr_gallery div").fadeTo(0, 0.3);
    $("#wr_gallery td").hover(function(){
        var className = this.className;
        $("#wr_gallery img, #wr_gallery div").not("."+className+" img").fadeTo(0, 0.3);
        $("."+className+" img, ."+className+" div").fadeTo(0, 1);
        
        $("#table_gallery").mouseleave(function(e){
            $("#wr_gallery img, #wr_gallery div").fadeTo(0, 0.3);
        });
    });
});