Develop existing javascript image gallery

Develop an additional component inside an existing javascript image gallery enabling a sub-gallery to be displayed. Skills required: PHP, Javascript & AJAX Desired flow: **ALREADY EXISTS** Open first page of image gallery index which contains thumbnails of pictures a, b, c, d, e, f, g & h. Click thumbnail of picture a to bring up large image of picture a with a panel on the right hand side of the image. **WORK REQUIRED** Panel on right hand side contains more thumbnails containing variations of picture a, namely a1, a2, a3, a4, a5, etc. Each individual image has an associated description held within a text file which should also be displayed in the right hand panel. **END OF FLOW** Majority of code already exists within the current application however it needs to be developed so that it can: - handle the sub-gallery funstion - pull description from a text file - handle any additions to the gallery automatically through a naming convention, ie: not require any updating of code, merely dropping the correct files in the correct directorys with the correct naming convention should be enough. ** main gallery dir = '/' ** pictures in main dir = 'a', 'b', 'c', etc ** main pic descriptions = '[login to view URL]', '[login to view URL]', '[login to view URL]', etc ** sub-gallery directorys = '/a/', '/b/', '/c/', ** sub-gallery pictures = 'a1', 'a2', 'a3', etc ** sub-gallery pic description = '[login to view URL]', '[login to view URL]', '[login to view URL]', etc Screenshots of both current gallery index page and proposed new item page layout are attached.