Decathlon 2000 shows all PDF documents through embedded Google Viewer API - this is an IFRAME, which sends the location of PDF to Google Viewer and shows it here. So you don't have to download the file and open it in Acrobat Reader. Just go to the "Decathletes" page - there are lots of PDF links to check out.
As the IFRAME content is located at Google server, which also uses cookies, the Internet Explorer security settings can restrict saving these cookies on your computer and in a result the viewer is disabled on our page, like that:
To enable the viewer in Internet Explorer follow these simple steps:
If you still have problems, then: