This is a pretty straight forward request, but I haven't succeeded yet. I am upgrading an older menu to 10.3, and some of the navigation events are actually javascript calls to pop up a new window. Unfortunately, I cannot simply put the javascript in the NavigateURL because it creates an <a href=java> which will create the popup but also navigate the page into oblivion.

Is there a way to make a menu item execute a javascript command without navigating the page?