Bug Fix And Merge Of Existing Firefox Addon

We are looking for an add-on that does the same thing as photozoom. (see attached) Further, wee want to fix a major bug, and re-release it through our addon (see attached) When you click on a facebook photo, there is an overlay that opens up a photo album over your current facebook page of the picture you clicked as the starting image. there is a bug in photozoom when an image is being enlarged by mousing over a smaller image. Clicking thru to the album will lock the zoomed image over the album overlay. We need a fix implemented that recognizes when an overlay is being applied and closes the enlarged image so that users can browse the full images of the album. Also in the Preferences for Mediapimp, tere needs to be an option to enable/disable this feature. (see attached) ****PLEASE PROVIDE A TIME FRAME ESTIMATE FOR COMPLETION ALONG WITH ANY BIDS, THANK YOU***