How to load a Google Map (GMap2) with the results of a Google Bar (GMap2.enableGoogleBar()) search already shown?

Question

I have a page with a GoogleMap with a GoogleBar and I would like the GoogleBar to appear with something written in it already and to have that search executed. In other words, I would like to "write something to the GoogleBar and press Enter" automatically as soon as the map loads. How can I do this?

edit: By GoogleBar, I mean the search bar that appears on the map after using the enableGoogleBar() function.