I've just released a new version of jQueryImpromptu. This version fixes a bug dealing with 4 or more checkboxes in a prompt. Also version 2.8 changes the Escape key event to rely on the "persistent" option. So if you don't want the prompt to close on Escape you need this option set to true. There should be no real problems with backwards compatibility but please report any issues if they come up. I also had a request for height and width options but I am still pondering how to integrate these nicely. Enjoy!