галета за страници, заредени в div

моят уебсайт се състои само от една страница, където всички други страници се зареждат в div, това, което искам да направя, е да създам навигационни трохи, за да следя страниците, заредени в div, всички решения, които намерих в интернет, работят само за страници, заредени в целия прозорец, така че някой има ли по-добра идея? моята страница:

<div id="nav" class="mmenu" style="float: left; position: fixed;">
    <ul type="none">
        <li><a class="upper" id="1" style="border-top-left-radius: 6px; border-top-right-radius: 6px; background-image:url('menu icons/user-blue.gif'); background-repeat: no-repeat; background-position: left; background-position-x: 5px;" target="collabsoft" href= "ProfilePage.php?property_variable=mine">My Profile</a></li>
        <li><a id="2" style="background-image:url('menu icons/comments.png'); background-repeat: no-repeat; background-position: left; background-position-x: 5px;"  target="collabsoft" href= "viewMessages.php">Messages</a></li>
        <li><a id="3" style="background-image:url('menu icons/newspaper.gif'); background-repeat: no-repeat; background-position: left; background-position-x: 5px;"  target="collabsoft" href= "userHomepage.php">My Conferences</a></li>
        <li><a id="4" style="background-image:url('menu icons/pageflip.gif'); background-repeat: no-repeat; background-position: left;background-position-x: 2px;"  target="collabsoft" href= "availableConferences2.php">Conferences</a></li>
        <li><a id="5" style="background-image:url('menu icons/users.gif'); background-repeat: no-repeat; background-position: left; background-position-x: 5px;"  target="collabsoft" href= "incomingRequests.php">Requests</a></li>
        <li><a id="6" style="background-image:url('menu icons/book.gif'); background-repeat: no-repeat; background-position: left;background-position-x: 5px;"   target="collabsoft" href= "viewNews.php" >News</a></li>
        <li><a class="lower" id="7" style="border-bottom-left-radius: 6px; border-bottom-right-radius: 6px; background-image:url('menu icons/gear.gif'); background-repeat: no-repeat; background-position: left;background-position-x: 5px;" target="collabsoft" href= "generalOptions.php" >Options</a></li>
    </ul>
</div>
<table id="collabsoft_table" style="border: 0px;">
    <tr>
        <td id="collabsoft_td"style="border:0px;">
            <div scrolling="no" id="collabsoft" name="collabsoft" style="color: #003366; left:200px; display:none;position: absolute; border: 5px #1f487c solid; width: fit-content; height: fit-content; border-radius: 10px;"></div>
        </td>
    </tr>
</table>

функция, използвана за зареждане на страници в div:

$("#nav a").click(function(event) { 
    event.preventDefault();
    var page = $(this).attr("href"); 
    $("#collabsoft").slideUp("500",function() {
        $("#collabsoft").load(page,function() {
            $(this).slideDown(500);
        });
    });
    return false;
});