Photoshop :: Action Script For Specialized Border

I want to create a PARTIAL frame to process for images of various sizes. Specifically, I have several thousand images of various sizes, and I need to create a 1-pixel width frame around the image, with the EXCEPTION of the bottom border, as well as 25 pixels from the bottom of the image.

Currently, I'm using a recorded action that selects the image, the inserts a 1-pixel black frame around the INSIDE part of the image (Stroke method). That part is easy. But what I need to have done is to omit the bottom border, as well as 25 pixels from the bottom on each side border.

Here are two images with full frames, using the Inside Stroke 1 pixel method. Note that both images are different sizes.

What I need NOW is to further modify the image to remove parts of the border as below:

Note that the image can be varying heights and widths, of which no height or width of the image is under 75 pixels. Nevertheless, i need a consistent result as above.

Can anyone provide a basic direction for me to go in? I am used to VB Script, but can also do Java as that seems to be the preferred method (I assume that this will require a script).

EDIT: Just for clarification, the pixels left after the border part is removed can either be transparent or the color white (as shown in the sample). The finished product will always go on a white background, so white pixels are ok.