How to view page source code when right click is disabled

I've seen a couple of websites that disabled visitors from right clicking on their web pages. I don't really get why they do this but it seems that it works with javascript and it doesn't allow their visitors to view the source code for that web page. This sort of defense system, I;d say would not stop real web programmers from viewing the page''s source code if they really wanted to.

There are several ways to view a page's source code even if right clicking is disabled:

- You can use Ctrl+U to view the page source code if right click has been disabled.
- You may also disable javascript on the page by changing your browser's setting
- You could also simply save the page to your computer and then opening it with a web page editor like Dreamweaver or MS Front page

So those are three other ways I know you can view a page source code even when right clicking has been disabled.