I can't make it work on my PopOver content,

                            var notifas=10;
                            $(notif_scroll=function() {

                                $('#notif_drop').scrollAppend({
                                    url: 'notifications.php',
                                    pixelBuffer:50,
                                    params: { action: "more", start: notifas},
                                    appendTo: "#notif_drop",
                                    footerClass: "#footer_drop",
                                    callback: function() {
                                        console.log("start:"+(notifas));
                                        notifas+=10;
                                        $('[rel=timeago]').timeago();
                                        notif_scroll();
                                        $(".popover-content").mCustomScrollbar("update");
                                        $(".popover-content").mCustomScrollbar("scrollTo","top");
                                    }
                                });
                            });

                <div id="notif_drop">
                <ul class="not"><li class="notif">
                        <a class="notif" href="/core/feed.php?id=104&to=/about">
                            <img src="/img/default_user_icon.jpg">
                            <span class="header">
                                <span class="name">_Minimal_</span> 
                                <span class="desc">eafcjsay</span>
                            </span>
                            <span class="time"><i class="icon-time"></i><abbr title="2013-03-13 15:29:13" rel="timeago">about 8 hours ago</abbr></span>
                        </a>
                    </li>
                </ul>
                .................................................................................................................................
                <ul class="not"><li class="notif">
                        <a class="notif" href="/core/feed.php?id=63&to=/about">
                            <img src="/img/default_user_icon.jpg">
                            <span class="header">
                                <span class="name">NetM</span> 
                                <span class="desc">rjwrwfum</span>
                            </span>
                            <span class="time"><i class="icon-time"></i><abbr title="2013-03-13 13:53:21" rel="timeago">about 9 hours ago</abbr></span>
                        </a>
                    </li>
                </ul></div>
                <<div id="footer_drop">End</div>

but when i scroll at the end of the page, it load the content inside the popover... :/

Edit: I also changed some lines into the source code

Line: 206
$(self.options.footerClass).addClass('footer_fixed')
->
//$(self.options.footerClass).addClass('footer_fixed')

Line: 212
self.position = 'fixed';
->
//self.position = 'fixed';