http://learnpython.org/static/js/codemirror/mode/clike/clike.js
http://learnjavaonline.org/static/js/codemirror/mode/clike/clike.js
http://learncs.org/static/js/codemirror/mode/clike/clike.js
http://learn-php.org/static/js/codemirror/mode/clike/clike.js
http://learn-js.org/static/js/codemirror/mode/clike/clike.js