This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Have you tried this with another browser or with another computer. SOUnds like there is an issue with your computer. The browser performs the action that it is set up to do. If it knows the file type, it tries to open it with the default program.