Chuck, I just tested it and it works perfectly. Thanks a million.
Oh, and one other thing. PayPal specifies that an image of 150 x 50 be used for the image_url variable, but I used a much larger image and it works great... no css resizing used on PayPal's side. The image displays at full size.
PayPal actually has a cpp_header_image that accepts a larger image of 750 x 90 for the checkout logo, and I bet this same size restriction is actually being applied to the image_url variable also, instead of the 150 x 50 restriction that is specifies
Thanks again. This really helps out!