A Computer Problem to Challenge Even TC's Brightest...

[Laser Link]

When you do print screen, it saves it into your clipboard (like if you copy something). So open up an image editor and paste. That should work for you.

I don't think the problem is with your browser, but my guess is that whoever made the website purposely disabled the normal right click options, and left you with an ability to close the window instead. I hate when people do stuff like that.