Got this from http://olex.openlogic.com/wazi/2012/easy-keyboard-shortcuts-for-web-pages/

Keyboard Hot Keys Demo #3, with jQuery plugin

Key "1" was pressed
Key combo "ALT+A" was pressed
Key combo "ALT+CTRL+B" was pressed
Key combo "ALT+CTRL+SHIFT+Z" was pressed

A nice box to type in:
Another nice box to type in: