Right Mouse does not display contextmenu

[Jerry]

I am using the RadTreeView control in a asp.net webform. I am trying to get the ContextMenu to display when a user clicks the right mouse. The problem I am having is that when the webform displays and the right mouse is clicked on a node, nothing happens.

However, when I place the RadTreeView in a test.aspx form, everything works OK. It only doesn't work with my webform that has a master page. 

In the code behind for my page, I run the below code to set the context menu for each node that was generated.

            foreach (RadTreeNode node in RadTreeView1.GetAllNodes())
            {
                node.ToolTip = "test tool tip -> ";
                node.ContextMenuID = "AssetMenu";
                node.EnableContextMenu = true;
            }

Here is the .aspx that defines my RadTreeView control:
<telerik:RadTreeView ID="RadTreeView1" runat="server" EnableDragAndDrop="True" OnNodeDrop="RadTreeView1_NodeDrop"

    OnContextMenuItemClick="RadTreeView1_ContextMenuItemClick"
    OnNodeDataBound="RadTreeView1_NodeDataBound">
        <ContextMenus>
        <telerik:RadTreeViewContextMenu runat="server" ID="AssetMenu" ClickToOpen="True" Skin="Vista">
            <Items>
                <telerik:RadMenuItem Text="Select Asset" Value="Select">
                </telerik:RadMenuItem>
                <telerik:RadMenuItem Text="View Hierarchy" Value="View">
                </telerik:RadMenuItem>
            </Items>
        </telerik:RadTreeViewContextMenu>
    </ContextMenus>
</telerik:RadTreeView>

Is there anything that I should be looking for in my master page that could possibly turn off the right mouse for the RadTreeView control? The tooltip is set successfully in the above code.

I have also tried assigning the contextmenu in the NodeDataBound() method without success.

What could I be missing with the contextmenu not displaying?

[Nikolay Tsenkov]

Hi Jerry,

 I was not able to reproduce the problem. Could you, please, try reproducing it only by what you have provided in your previous post?

Regards,
Nikolay Tsenkov
the Telerik team

[Jerry]

The RadtreeView control was being displayed in a popup and I needed to set the z-index of the contextmenu. This solved the problem:

style="z-index:20000"