I'm using the attached code to add menues to a menu bar. The Separator doesn't
show up, and although it's not in the code, radio items don't work either. What
gives?

P.S. View points to the menu bar.

demoMenu = view.addMenu("Demo");
demoMenu.addMenuItem({label: "Exit", instanceName: "demo_exit"});

styleMenu = view.addMenu("Style");
styleMenu.addMenuItem({label:"Halo Green", instanceName:"style_green"});
styleMenu.addMenuItem({label:"Halo Orange", instanceName:"style_orange"});
styleMenu.addMenuItem({label:"Halo Blue", instanceName:"style_blue"});
styleMenu.addMenuItem({type:"seperator"});
styleMenu.addMenuItem({label:"Default", instanceName:"style_default"});

aboutMenu = view.addMenu("About");
aboutMenu.addMenuItem({label: "About this Demo...", instanceName:
"about_demo"});