Thank you all for your answers.
Petteri, yes the first screen shot comes from a pdf that was opened with Adobe Reader, same result when I opened it with Adobe Acrobat. No the second screen shot was taking after uploading the pdf to the server and previewing it in the browser, Google Chrome, IE and Firefox gave me the same preview.
I guess my question now, after reading your answers will be, is there a way to hide the hotspots without hidding the rounded buttons and keeping functionality of the button intact?
Thanks,
Trish