Which package do I need?

Hello,

I’ve got a bit of a problem..

I want to have a category-based menu with markers only showing when the category of those markers, that are assigned to these categories, is chosen.
I would like to know which extensionpack I need to buy for that, because I only want to do this, not any other stuff, just the dropdownmenu with the categories/tags and then show the markers.

I hope you can help me.

Also I would like to know if, when I purchase that package, can I only use it for one site or for more?

Thanks 🙂

http://wordpress.org/extend/plugins/store-locator-le/