I have noticed a strange behavior in the way that Mozilla Firefox handles the TAB and SHIFT-TAB keys. Use your imagination (or do a mental simulation with the following scenario:

You are sitting in front of your computer. You click and subsequently run the trendy and well-liked (and Open Source Software (OSS) nonetheless!) Firefox Web Browser program (for some reason I feel the need to state the following: once Google implements plug-ins for the Chrome web browser, I think it will probably pick up a huge chunk of the browser market software quality things may well chagne -- and let's face it, FF's model is S-L-O-W in many instances when compared to the more advanced and well-suited multi-threading system used by Chrome. At any rate..I think that was just way too much information on a side topic..).

The result above was obtained by: Firefox has finished starting up and is displaying a blank white page (My homepage is blank).

The result above was obtained by: The mouse has been clicked in the URL bar region.

The result above was obtained by: Pressed the SHIFT-TAB key combination (or TAB-SHIFT, if you prefer) one time. Nothing much happened

The result above was obtained by: Pressed the SHIFT-TAB key combination once more. It has now been pressed twice -- two (2) times total. Notice how the cursor is now up on the Google Search Toolbar widget.. after 2 presses..

The result above was obtained by: Pressing tab just one time.

So ultimately, my question is simply, why does it take two reverse tab key presses to get to the search toolbar from the url bar, but only one to go from the search toolbar to the url bar?