FabrikaHradekTour/res/forum/admin.html

<div id="panels">
    <div id="left_panel">
        Zde budou uživatelé.
    </div>
    <div id="right_panel">
        B
    </div>
</div>
<script>
    $.ajax
    ({
        url: "./res/forum/list_table.php",
        success: function(result)
        {
            $("#left_panel").html(result);
        }
    });
</script>