Hello All. 

I get the below error when clicking on a dnn menu item, it prompts the error and then the navigation stops.

SCRIPT5007: Unable to get property 'location' of undefined or null reference 
dnn.js, line 1 character 14223

the menu item get the style of the selected item, but no navigation occurs. 

Thanks in advance.

thanx fro ur reply.

yes it is a custom skin i made.

thank you, actually i'm thinking of moving to the DDR menu in the next project, bu this one .. i have to deliver on time :(

Here's the whole skin markup 

<script type="text/javascript">
    $(document).ready(function () {
        //Remove outline
        var links = document.getElementsByTagName('a');
        for (var i = 0; i < links.length; i++) {
            links[i].onmousedown = function () {
                this.blur();
                return false;
            }
            links[i].onclick = function () {
                this.blur();
            }
            if (/msie/i.test(navigator.userAgent) && !/opera/i.test(navigator.userAgent)) {
                links[i].onfocus = function () {
                    this.blur();
                }
            }
        }
        /*Search Text Box*/

        $('#dnn_dnnSEARCH_txtSearch').val('  Search');
        $('#dnn_dnnSEARCH_txtSearch').focus(function () {
            if ($('#dnn_dnnSEARCH_txtSearch').val() == '  Search') {
                $('#dnn_dnnSEARCH_txtSearch').val('');
            }
        });

        $('#dnn_dnnSEARCH_txtSearch').focusout(function () {
            if ($('#dnn_dnnSEARCH_txtSearch').val() == '') {
                $('#dnn_dnnSEARCH_txtSearch').val('  Search');
            }
        });

        var title = document.title;
        if (title.indexOf('Search Results') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-searchresults.jpg');
        else if (title.indexOf('ENF Login') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-Login.jpg');
        else if (title.indexOf('News') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-News.jpg');
        else if (title.indexOf('Media Gallery') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-MediaGallery.jpg');
        else if (title.indexOf('Program') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-Programs.jpg');
        else if (title.indexOf('Partners') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-Partners.jpg');
        else if (title.indexOf('Education') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-Education.jpg');
        else if (title.indexOf('Stories') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-Stories.jpg');
        else if (title.indexOf('Youth') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-Youth.jpg');
        else if (title.indexOf('About') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-About.jpg');
        else if (title.indexOf('Involved') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-Involved.jpg');
        else if (title.indexOf('Events') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-Events.jpg');
        else if (title.indexOf('Publications') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-Publications.jpg');
        else if (title.indexOf('Employment') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-Employment.jpg');
        else if (title.indexOf('Contact') != -1)
            $('#imgBG').attr('src', '/ENF/portals/0/insideimages/inside-Contact.jpg');
        else {
            ;
        }
    });

</script>

<img class="background" id="imgBG" src="/ENF/portals/0/home-top-bg1.jpg" style="display: inline;" />
<div id="ControlPanelWrapper">
    <dnn:CONTROLPANEL runat="server" ID="cp" IsDockable="True" />
</div>
<div style="clear: both;">
</div>
<div class="full_width">
    <div class="menu_container">
        <div class="wrapper">
            <div class="top_menu">
                <div class="nuqol_logo">
                    <a href="/ENF">
                        <img src="/ENF/Portals/_Default/Skins/ENF-home-en/Images/nuqol_logo.png" width="198"
                            height="62" /></a>
                </div>
                <div class="nuqol_top_menu">
                    <dnn:NAV runat="server" ID="NAV3" ProviderName="DNNMenuNavigationProvider" IndicateChildren="false"
                        ControlOrientation="Horizontal" CSSContainerSub="SubMenu" CSSControl="mainMenu">
                    </dnn:NAV>
                </div>
            </div>
        </div>
    </div>
    <div style="clear: both;"></div>
    <div class="wrapper">
        <div class="left_modules">
            <div class="quick_links">
                <dnn:NAV runat="server" ID="NAV1" ProviderName="DNNMenuNavigationProvider" IndicateChildren="false"
                    ControlOrientation="Vertical" CSSContainerSub="SubMenu" CSSControl="LeftMenu"
                    StartTabId="106">
                </dnn:NAV>
            </div>
            <div style="clear: both;"></div>
            <div class="search_container">
                <dnn:SEARCH runat="server" ID="dnnSEARCH" CssClass="ServerSkinWidget" UseDropDownList="false"
                    ShowSite="false" ShowWeb="false"
                    Submit="<img  style=width:31px;height:35px;margin-left:-7px;position:relative;top:-1px;left:-3px; src=&quot;images/search-button.jpg&quot; border=&quot;0&quot; alt=&quot;Search&quot; /&gt;" />

            </div>
            <div style="clear: both;"></div>
            <div class="get_involved_module" id="Get_Involved" runat="server"></div>
            <div style="clear: both;"></div>
            <div class="quote_module" id="Quote" runat="server"></div>
        </div>
        <div style="float: left;">
            <div style="float: left; margin-top: 12px; margin-bottom: 12px;">
                <dnn:BREADCRUMB ID="bc" runat="server" RootLevel="0" Separator=" >> " />
            </div>
            <div style="clear: both;"></div>
            <div class="center_modules">
                <div class="news_module" id="ContentPane" runat="server"></div>
            </div>
        </div>
    </div>
    <div style="clear: both;"></div>
    <div class="footer_container">
        <div class="footer_text">
            Designed & Developed by <a href="http://www.primus.com.jo" target="_blank">Primus</a>
            - A division of Computer Networking Services (CNS). 
                    Copyright &copy; 2012. <b>Elia Nuqul.</b> All Rights Reserved.
        </div>
        <div class="follow_buttons">
            <div style="float: left; margin-right: 8px; margin-top: 3px\9;">Follow Us</div>
            <div style="float: left; margin-right: 8px;">
                <a href="#">
                    <img src="/ENF/portals/0/twitter.png" width="18" height="18" /></a>
            </div>
            <div style="float: left;">
                <a href="#">
                    <img src="/ENF/portals/0/fb.png" width="18" height="18" /></a>
            </div>
        </div>
    </div>
</div>

Thanks again