How to solve object required error when calling java script from script folder?

Hi

I have developed a website with a master page which has menus to navigate to different pages. I have written the following code to hide and show the menus.  It works fine on my developer machine but I get "object required" error message on the production server.
I call the js code from the script folder in ASP.NET 4 website.

Can you please help?

Thanks

Jose

]This is called from the maste page:

 <!--BEGIN TO NAVIGATE-->  
   <script type="text/javascript" src='<%= Page.ResolveUrl("/Scripts/JoeNavigation.js") %>'>/</script>    
 <!--END TO NAVIGATE-->


This list is for Menus:

<div id="menu">
            <ul>
<li><a href="<%=Request.ApplicationPath%>/Default.aspx" accesskey="1" title="" id="Home">Home</a></li>
<li><a href="<%=Request.ApplicationPath%>/QuickQuery.aspx" accesskey="2" title="" id="QuickQuery">Quick Query</a></li>
                  <li><a href="" accesskey="3" title="" id="GRRAdmin">GRR Admin</a></li>      
<li><a href="<%=Request.ApplicationPath%>/About.aspx" accesskey="4" title="" id="About">About</a></li>
<li><a href="<%=Request.ApplicationPath%>/Help.aspx" accesskey="5" title="" id="Help">Help</a></li>       
                  <li><a href="" accesskey="6" title="" id="UserLoginDisplay">Login</a></li>  
<li><a href="<%=Request.ApplicationPath%>/ChangePassword.aspx" accesskey="7" title="" id="ResetPassword">Reset Password</a></li>                          
</div>



This Java script code is saved with  .js extention in "script" folder:

//BEGIN MENU NAVIGATIONS

    function HideMyAdmin() {
         document.getElementById("MyAdmin").style.display = "none";
         document.getElementById("ResetPassword").style.display = "none";    
    }

    function HideMyAdminAndLogin() {
        document.getElementById("MyAdmin").style.display = "none";
        document.getElementById("UserLoginDisplay").style.display = "none";
        document.getElementById("ResetPassword").style.display;      
    }

    function ShowMyAdmin() {
        document.getElementById("UserLoginDisplay").style.display = "none";
        document.getElementById("ResetPassword").style.display      
    }

    function HideALL() {
        document.getElementById("MyQuery").style.display = "none";
        document.getElementById("MyAdmin").style.display = "none";
        document.getElementById("ResetPassword").style.display = "none";    
    }

    function HideLogin() {      
        document.getElementById("UserLoginDisplay").style.display = "none";
    }

    function HideForChangePw() {
        document.getElementById("MyAdmin").style.display = "none";
        document.getElementById("UserLoginDisplay").style.display = "none";
    }
     
    //END