web development for Label Me open source project

I need some minor changes to be made to this open source webapp called LabelMe ( [login to view URL] ) Brief description of the requirement: The LabelMe app lets developer annotate objects in a picture. For e.g they can use the tool to draw an outline around a cat in the image. So if you set it up for a bunch of images, the tool will let you annotate images one after the other. Once the annotation is done, you can click next to go onto the next image. After the annotation is done an XML is created to represent the bounding box co ordinates for the annotations. The change I need entails changing the navigation to take the user to an image that doesnt have any annotations done As as example: Lets say I have the following images in sequence: A1,A2,A3,A4............A100. Lets say I work on images 1 through 34 & take a lunch break. I close the browser. When I come back and re open it. It take me to the 1st image in the sequence that doesnt have annotation done to it. [login to view URL]