// Called by Directory Opus to initialize the script
function OnInit(initData) {
    initData.name = 'ExpandTree';
    initData.default_enable = true;
    initData.min_version = '12.0';
}

// Called when a new Lister is opened
function OnOpenLister(openListerData) {
    var cmd = DOpus.Create().Command();
    cmd.SetSourceTab(openListerData.lister.activetab);
    cmd.RunCommand('Go PATH=D:\ EXPANDTREE');
    cmd.RunCommand('Go BACK');
}