ASP.net Highlighting current tab in Navigation Bar in a Master Page.

I am trying to get the current tab to be highlighted on a navigation bar to make my pager look more user friendly.
 
I have been unable to use css as the the pseudo classes only work when the page is clicked and reverts to page visited rather than active.
 
I understand JQuery can be used in this case.
I have an empty jquery script at the bottom of my master page.
 
my html in my masterpage is as follows:
 

         <div class="clear hideSkiplink">
                <asp:Menu ID="NavigationMenu" runat="server" CssClass="menu" 
                    EnableViewState="false" IncludeStyleBlock="false" Orientation="Horizontal" 
                    onmenuitemclick="NavigationMenu_MenuItemClick">
                    <Items>
                        <asp:MenuItem NavigateUrl="~/Index.aspx" Text="Home" />
                        <asp:MenuItem NavigateUrl="~/About.aspx" Text="About"/>
                        <asp:MenuItem NavigateUrl="~/Contact.aspx" Text="Contact"/>
                        <asp:MenuItem NavigateUrl="~/Admin/EditPageContent.aspx" Text="Edit Conetent"/>
                        <asp:MenuItem NavigateUrl="~/Portfolio.aspx" Text="Portfolio"/>
                        <asp:MenuItem NavigateUrl="~/Admin/AddToPortfolio.aspx" Text="Manage Portfolio"/>
                    </Items>
                </asp:Menu>
            </div>

 
i am not sure what jquery to use to make the background change stay until anothe rmenu item is clicked.