$('.my-list li .button').click(function(){
    var button = $(this);
    overlay_content_inner.empty();
    overlay.fadeIn(300,function(){
        button.find('.user-comment-list').css({"display":"block"}).appendTo(overlay_content_inner);
    });
});
btn_remove.click(function(){
    overlay.fadeOut(300,function(){});
});