script for relinking files in multiple documents

Does anyone have a script that will relink files to files with a different name, across different documents?

I have about 15 files that all have the same image (lets say it's called "circle.jpg") and I need to change that image to "square.jpg" in each of the 15 documents.  The tedious way would be to open each file, go to the links panel, click on "relink," and navigate to the "square.jpg" file to replace the image.  Is there a script that will do this automatically?  I want to be able to tell the script "Open up all .indd files in this folder, and replace all circle.jpg links with square.jpg"

Thank you!!!