Gordon,

My problem is that if I have more than one (multiple) WebMenuBars on the page, and they happen to have repeating access keys, then only the first menu bar reacts to the Alt+a, and there's no way to expand the second menu bar's item with the same access key.  Try putting two web menu bars on the page, and give their menu commands matching access keys.  So the first web menu bar will have 3 menu commands with access key a, b, c, and the second one will have the same - 3 commands with a, b, c.  Only the first web menu's commands will expand.  It doesn't really matter if the commands are added programmatically or not.  What's more important is that the WebMenuBars are added dynamically, and there's no way of knowing how many are on the page, or what are the assigned access keys for the menu commands.

Hopefully this explains my problem better..

Dasha.

Actually , the main task was to change the Tag value on the currently selected node.  so somehing like this:

function Button1_onclick() {
    var WebTreeView1 = ISGetObject("WebTreeView1");

    var selectedNode = WebTreeView1.GetSelectedNode();

    selectedNode.Tag = "Tag is set on Button1_onclick event";
    document.getElementById("Text1").value = WebTreeView1.GetSelectedNode().Tag;
}

I realize that the changes made to the selected node variable are not sticking, but how can I make the modification to the currenlty selected node? 

Thank you Glenn, the workaround worked.