We recently upgraded to 9.1.201510 and are in the process of branding our Blackboard. Regardless of what dimensions I use for our top frame background image, it appears blurry. I tested the image in other websites and it appears sharp. I also found that Blackboard resizes the images in an inconsistent manner. When looking at the code, I can see that the header is 89px in height for the top frame and the width can change with the browser size. However, when I use what should be correct dimensions (89px x 2000px), it makes the image blurry. Does anyone have any recommendation on what image dimensions they used for their top frame background image? Or has anyone encountered the issue with the images are blurry?