Bumped into a problem with IE9 not being able to use appendChild() on the body. This little snippet helped fix it.

gistfile1.js

var fnAppendToBody = (function(){

  var domBody = document.body;

	try {
		var d = document.createElement('div');
		domBody.appendChild( d );
		d.parentNode.removeChild( d );
	} catch(e) {
		domBody = document.documentElement.getElementsByTagName('body')[0];
	}

	return function(domElm){
		domBody.appendChild( domElm );
	}
})();

Switched it to get the body from documentElement. Safer I feel.

Added functionality to remove the test div