References:

• http://blog.whatwg.org/the-road-to-html-5-contenteditable
• http://www.starkravingfinkle.org/blog/wp-content/uploads/2007/02/midas-iframe.html - simple demo of designMode
• http://www.quirksmode.org/dom/execCommand/ - execCommand demo with styling buttons
• http://www.quirksmode.org/dom/execCommand.html - execCommand docs
• http://stackoverflow.com/questions/5205544/set-execcommand-just-for-a-div
• http://stackoverflow.com/questions/1391278/contenteditable-change-events