Modify film_reorder.il

I have been looking at the program "film_reorder.il" (available at cadence.com) and have found it useful but would like to make a small modification to it.  After you have selected a layer to be moved (up or down) in the list you have to re-select it if you want to move it more than one position.  Does anyone know of a way to modify this program so the selected layer stays selected until another layer is selected?  I would like to just click the up/down arrow X times until it is moved into the correct position without having to keep re-selecting the layer.

Thanks!