Sometimes a script and the request made for it in the forums here just click. Usually this is the result of my having a lot of experience with a script. However, it can also be because of, as is the case with FrogJS Gallery, how clearly a script is written. In any case, many of you may enjoy seeing these two threads from the help section as regards FrogJS:

Getting it to open a new window (target and/or specifications)

and

Getting it to move 'backward'