image resizer will dynamically resize the images. it has an option for fit to box which allows you to set a specific box size, and portrait images will be resized by height to fit the box, and landscape images resized by width to fit the box.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.