Hi. Every web-browser downloads the complete source of your page, and regardless of whether you disable right click or not, the user can save a copy of this code, or view the source from the menus in any mainstream browser, no plugins or special knowledge required.
Even if browsers didn't allow this, a novice programmer could write a program in less than 3 lines of code to download and save the source of your page, all they have to know is the address.
You can also put most of the program logic on the server side so that people can read the output you send them (ie the pages), but not how your web application works (ie how decisions are made and page content is generated).
What is your purpose in trying to hide your code? If you explain that then maybe there are other ways to achieve what you want.