Save a web photo to camera roll in Phonegap
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My iOS PhoneGap app displays a photo gallery (loaded from the server).  Is it possible to add a button on an images page which **saves the image to the iOS camera roll**?  (similar to the tap and hold in mobile safari)

If this is something that needs to be done as a plug in, any information pointing me in the right direction would be appreciated! (My skills in obj C are very lacking).

Thanks!