Thank you Ashley for taking the time to reply, and giving me some trouble shooting options.
I tried making it another two pixels taller but the result was the same. I also checked my graphics card settings, and everything was set to original factory defaults. I even uninstalled TuneUp Utilities 2013, and that didn't make a difference.
I also complained to my graphics card vender. But I have been doing that for over a year now, and they never reply. It is just a waste of time.
When I installed Windows 8 I installed it from a retail disk over a Windows 7 OS. This gave me the option to keep all my Windows settings, programs, and files. To be honest my computer has never run faster. I was also so impressed with the speed, and performance of IE 10 that I made it my default browser. I'm getting a steady 60fps on all games with canvas2d now.
Iv tested all my other graphics software Photoshop CS6, Illustrator CS6, The Gimp, Inkscape to name a few and there are no problems at all.
But with over 1200 views of this thread, and no one else seems to be having this problem then it must be my computer.