How do I add a dropdown menu button to IE

I've found the tutorial on adding buttons to the IE toolbar (http://msdn.microsoft.com/workshop/browser/ext/tutorials/button.asp), but it doesn't cover how I can add a dropdown menu button to the IE toolbar. Is this possible for an extension? Or do I need to add my own toolband in order to add a dropdown button?

I'd rather not add a separate toolband, just to host one or two buttons to IE.

Thanks,
Lynne

[424 byte] By [lynne424] at [2008-1-25]