I'm no hard-core web developer, but I do recall readingsomewhere that using the width/height properties varies in results on different browsers. Some might squeeze the image differently than others. If this is an intranet site that will have homogenous users (everyone on IE:5 or something), it's no biggie then. But if it's open to the world, I would suggest going the Image::* routes mentioned above, as it will ensure a consistent face for all your users.