Solved.
The following works:
// Create the tabbed panel & 3 Tabs
var scriptWindow = new Window("palette", "SCRIPT_NAME"); {
var tabPanel = scriptWindow.add("tabbedpanel", undefined, "")
var Tab1 = tabPanel.add("tab", undefined, "TAB_1")
var Tab2 = tabPanel.add("tab", undefined, "TAB_2")
var Tab3 = tabPanel.add("tab", undefined, "TAB_3")
}
scriptWindow.show();
// Do something when the Tab is changed to 'Tab1'
tabPanel.onChange = function() {
if (String(tabPanel.selection) == "Tab1") { // If 'Tab1' is selected
// do something
}
}
Cheers,
Mike Sevigny