I'm trying to build a very complex menu and really need some help.

I've put together some examples of how the sub nav needs to work in the following document:

http://dl.dropbox.com/u/528350/kws-sub-nav.docx

I've also got the nav kind of working here:

http://31.222.141.203/level-2.aspx

Notice that all the branches open as you step down the navigation tree. What does not happen is essentially:

I only want to display the chiildren and parents of the currently selected node. Not all nodes.

The code I have so far is:

@inherits umbraco.MacroEngines.DynamicNodeContext          
@functions{
    int level_3 = 1;
    string open_level_3 = "";
    string open_level_4 = "";
}
@{
    int level_2_node_id = 0;
    foreach (var level in @Model.Ancestors().Where("Visible").Where("Level == 2"))
    {
        <h2><a href="@level.Url">@level.Name</a></h2>
        level_2_node_id = @level.Id;
    }
    if (@Model.Level == 2)
    {
        <h2><a href="@Model.Url">@Model.Name</a></h2>
        level_2_node_id = @Model.Id;
    }
  
}
@helper traverse(dynamic node)
{
    var items = node.Children.Where("Visible").Where("Level <= 99").Where("NodeTypeAlias != \"contact-us\"").Where("NodeTypeAlias != \"HomepageSlide\"").Where("NodeTypeAlias != \"search\"").Where("NodeTypeAlias != \"GalleryMediaItem\"").Where("NodeTypeAlias != \"InteriorSlide\"").Where("NodeTypeAlias != \"FocusedLandingSlide\"");
    
    foreach (var item in items)
    {
    
        if (@Model.Name == @node.Name) { open_level_3 = "level3"; }

    }
    if (items.Count() > 0 && @Model.Level >= @node.Level)
    {   
        
        <ul class="nav clearfix" id="level_@(node.Level + 1)">
            @foreach (var item in items)
            {
                
                <li  @if (@Model.Url == @item.Url){@Html.Raw("class=\"selected\"");}><a href="@item.Url">@item.Name</a>
                    
                    @traverse(item)
                    
                </li>
                    
            }
        </ul>
       
    }
        
}

<div class="results">
    @traverse(@Model.NodeById(@level_2_node_id))
</div>