XULrunner Key Element Listener That Will Run The Menuitems Command Event

In XULrunner I am trying to add keyboard shortcuts (Ctrl+N) to my menus. I would like to just have the <key> run each particular menuitems command function. The entire keyset is generated in PHP, so xul and/or javascript has to figure out what exact function needs to be fired.

The menuitems look something like this

<menuitem id="refresh-menu" label="Refresh" funcname="RefreshWin" key="refresh-key" />

I have setup the command event listeners for the menu like so

menubar.addEventListener('command', MenuLauncher, false);

function MenuLauncher(e)
{
    if (e.target !== e.currentTarget && e.target.getAttribute('disabled') != 'true')
    {
        if (e.target.nodeName == 'menuitem')
        {
            var funcname = e.target.getAttribute('funcname');

            if (typeof WindowControls[funcname] != 'undefined')
            {
                WindowControls[funcname]();
            }
        }
    }
}
var WindowControls =
{
    RefreshWin: function()
    {
        window.location.reload();
    },

    //other functions
};

And my keys look something like such

<key id="refresh-key" modifiers="control" key="R" />

The MenuLauncher looks at the e.target object and grabs the custom attribute funcname and I use that to call the correct function.

If the key could just fire a click() on the menuitem object it would work. Or if it could just pass the menuitems object to the MenuLauncher, something like oncommand="MenuLauncher([menuitemobject])".

All efforts to find the trick to this have failed right now it looks like it would be easier to just use a pure javascript keyboard event listener.