How to prevent users from copying content from website

Is there any way to prevent users from copying content from website and display encrypted code in view source?

I know that techies will always find a way but if it prevents normal users it’s OK.

Answer

Check out ionCube HTML Obfuscator:-

http://www.ioncube.com/html_encoder.php

As of the text contents, Try this code:- Live Demo (IE isn’t supported)

<script type="text/javascript">
document.oncopy = function(){
    var bodyEl = document.body;
    var selection = window.getSelection();
    selection.selectAllChildren( document.createElement( 'div' ) );
};
</script>