Highlighting and beautify for code snippets

Select code snippets with (*`Alt key`*) or (*`Ctrl key`*) or (*`Shift key`*) or (*`Meta key`*) 
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You can input custom code to get Highlighting and beautify with command menu when you don't select anything

Use [prettify.js](http://groups.google.com/group/js-code-prettifier) to highlight
and [js-beautify](http://jsbeautifier.org/) to format

Support on JS (also effect on JSON) CSS HTML

Test case:`{"alpha":416,"green":710}`. Select this with funcKeys and click the icon.