Whilst there are a number of HTML Text Protection and Image Protection scripts on the market, many of which are freeware, there is really no real way to protect your HTML script from being copied.

The codes above do scare off the newbies, with messages saying that this page is protected.
View Source right click options may be disabled, but the viewer can still go to the menu toolbar to select this option
Those protection scripts that use java to make your code meaningless jibber, also mean that many user-agents such as Google Bots cannot read it either.

As an example of how to overcome HTML Protection

Overcoming HTML Protection Using IE5.x

Save the entire webpage to your disk.
Left click on a graphic > hold down the mouse button > drag image up to the address bar.
This will open the graphic in a new window, without the right click code.

Overcoming HTML Protection Using Netscape

Netscape also has a "view source" option in the VIEW menu, under page source [CTRL-U ]

End story is that whilst there are several variations of protection, essentially, each one of the proposed no right-click solutions is meaningless. Nothing can be hidden and nothing can be protected using these types of html protection scripts.