Adobe AIR Javascript: Function to save clipboard bitmap data as JPG file

This project is for a function, written in Javascript for Adobe AIR (using Adobe? AIR? API Reference for HTML Developers). The function should check if the clipboard contains a bitmap image (i.e. from a screenshot) and if so, save that image data as a jpg file. The file should be named "Clipboard Image YYY-MM-DD [login to view URL]" (a timestamp) and be saved to the application data directory. The function should return the name of the image file saved or FALSE if there was no image data in the clipboard.