I have ironed out a little bug Ive found with the close button, what it did for me was when I clicked on the close button it would set the link to active and create a border around the close button picture. Doing this made the Div that the comment and the close button where in get bigger without warning and it created an overflow area in the Div.
I added this line in to compensate: var objImageDataContainer = document.createElement("div"); objImageDataContainer.setAttribute('id','imageDataContainer'); objImageDataContainer.setAttribute('style','overflow-x: hidden; overflow-y: hidden;'); <<--- Added line #298 objLightbox.appendChild(objImageDataContainer);