Terry Mun has shared an tutorial for Creating Beautiful Photosets with jQuery and CSS. It fits into a fluid width layout. It is fully customisable, such that one can dictate the layout as desired, preferably in a straight forward, fuss-free manner.
All images fit snugly into a single row, but their widths are adjusted accordingly so that all images on the same row fill the entire width, not more and not less, of its parent container, while preserving their individual aspect ratios.
Requirements: jQuery and CSS
License: License Free