images in xml file look pixelated

I've just redone the portfolio section on my website and have created separate xml galleries for each folio section. The problem is that the images in the gallery do not look clean and crisp and are instead jagged and pixelated - especially in the "print" and "identity" sections. I've tried saving the files as jpeg, as png and have also tried making the images smaller within the movie clip loader. Nothing works. It always looks jaggedy. The galleries are at http://www.clearlygreendesign.com and then click on the "folio" button. Thanks in advance.