HoverMenuExtender setting to not stick when Target is clicked?

Hello everyone!  I hope someone can answer this question that should hopefully be pretty straight forward.

I have a HoverMenuExtender applied to a LinkButton.  This LinkButton is just calling a javascript function to open a separate browser window and then returns false, so no postback.

When the LinkButton is clicked, the window opens and I do what I need to do there and close it.  Back on the page with my LinkButton, the hovermenu is now sticked on and will stay there until I click somewhere else on the page.

Is there a way to disable the HoverMenuExtender sticking when the Target is clicked feature?

Thanks!