One idea to overcome this problem is screen capture. If you use "print screen " button it captures only the visible screen region..but what if the page contains huge data and need to be scrolled down ?? this 'print screen ' idea also fails..
The simple solution to this problem there is a add-on available for Mozilla Firefox named Screengrab.
Click here to Download :
Install that add-on. It sits in status bar of your browser,copies the visible screen portion or complete web page (no problem how length the page may be) just in a click.
Just select your action and save it in .png or .jpeg format.
NO NEED TO DEPEND ON ANY SCREEN GRAB SOFTWARE.