Using the latest version (Q2 2011), I'm getting a null response from the attempt to access the title bar:
var oTitleBar = oWindow.GetTitlebar();
The alert that pops open is "null".
Of course, if I double-click on the icon, I get the default behavior of the window maximizing, and putting an alert in the function for the double-click shows that the function does not fire.
Can you assist?