Enable to print whole web page using window.print() javascript function

I am using win开发者_如何学Pythondow.print() JavaScript function for printing a web page. But it is not printing full page.

Give a chance to the follow JQuery plugin:

http://plugins.jquery.com/plugin-tags/print

digging the link above you get this sample

http://projects.erikzaadi.com/jQueryPlugins/jQuery.printElement/Sample/