List all images which can be obtained from the following two script functions:
CountImages() and FindImageByIndex()
These images can be hidden images and/or images which are not shown in the "Window" menu. This is a handy tool to track if images created in scripts can be "deleted" (i.e. go out of scope) properly. Image(s) created during script execution that do not show up in the "Window" menu and cannot be deleted can be located by this utility. These "persistent" images usually indicates a "memory leak" and the responsible scripts should be checked.