Turing machine simulator in HTML/Javascript

This is the source for the HTML/Javascript Turing machine simulator at http://morphett.info/turing/

File description:

• jsturing.js: Main Javascript code for the Turing machine
• turing.html: Main HTML file for the Turing machine
• turing.css: CSS for most elements of turing.html
• textarea.css: CSS for line highlighting and 'Next', 'Prev' indicatods in the program source textarea
• save.php: simple proxy for saving machine state to Github
• jquery-1.11.1.js, jquery-1.11.1.min.js: JQuery file, used by jsturing.js
• ie-fixes.css, polyfills.js, json2.js: fixes for old Internet Explorer versions (< 10)
• machines/*.txt: Sample Turing machine programs