This is a simple script that switches the left and right halves of the loaded single layer image. I wrote this because I have a 3D lens and by switching the two halves of the image, the image become a cross-view 3D image. It makes the process quick and easy. Maybe someone else can benefit from it.
Version 1.1 doesn't flatten the image as version 1.0 did. Instead it merges the two layers, leaving the remaining layers as they were. The resulting layer has an alpha channel, so transparencies remain intact.