jquery menu not redirecting on specified path

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jQuery

Dear all,
I am using Menu Using JQuery it is working very well but there is small problem.In my project there are some pages in a folder and when
I click on menu, it navigate to correct page which is in folder but after i click on other menu it creates wrong Url
* my menu control is on master page
on a route content is : MemberInformation.aspx, FillMemberInformation.aspx, AND "Admin" Folder
in admin folder there is a page named AddPackage.aspx
when i request to MemberInformation.aspx, FillMemberInformation.aspx pages it redirects well.as well as it works well when request to addPackage.aspx

eg.:http://localhost:1037/VehicleServicing/MemberInformation.aspx
now I am on addPackage.aspx which is in admin folder and if i request to MemberInformation.aspx, it try to redirect path which contains admin folder in path

eg:http://localhost:1037/VehicleServicing/Admin/MemberInformation.aspx
======Server Error in '/VehicleServicing' Application.
======The resource cannot be found.


here is my code

<tr style="background-color: #00CC00; height: 30px">
                     <td valign="bottom">
                         <ul id="nav">
                             <li><a href="#">Parent 01</a></li>
                             <li><a href="#" class="selected">Master</a>
                                 <ul>
                                     <li><a href="MemberInformation.aspx">Member</a></li>
                                     <li><a href="Admin/AddPackage.aspx">Package</a></li>
                                     <li><a href="#">Worker</a></li>
                                     <li><a href="#">User</a></li>
                                 </ul>
                                 <div class="clear">
                                 </div>
                             </li>
                             <li><a href="#">Transactions</a>
                                 <ul>
                                     <li><a href="#">Transactions 1</a></li>
                                     <li><a href="#">Transactions 2</a></li>
                                     <li><a href="#">Transactions 3</a></li>
                                     <li><a href="#">Transactions 4</a></li>
                                     <li><a href="#">Transactions 5</a></li>
                                     <li><a href="#">Transactions 6</a></li>
                                     <li><a href="#">Transactions 7</a></li>
                                 </ul>
                                 <div class="clear">
                                 </div>
                             </li>
                             <li><a href="#">Report</a></li>
                         </ul>
                         <div class="clear">
                         </div>
                     </td>
                 </tr>

This is the jquery script:

<script type="text/javascript">
$(document).ready(function () {
    $('#nav li').hover(
        function () {
            //show its submenu
            $('ul', this).slideDown(100);
        },
        function () {
            //hide its submenu
            $('ul', this).slideUp(100);
        }
    );
});
    </script>

Why it is happening please help me.