Jeremy, thanks for the advice about how to get an image to open in a separate window. Unfortunately, the procedure that I followed was exactly as you described, and it still was embedded. However, I just did some tests, and have determined that the cutoff for opening in a new window is now 1203 pixels; anything less will be embedded. For example, the images above are 1202 pixels wide. Here is another version that is 1203, and as you can see, it opens in a new window.