Include to mirror a web page. jQuery not required. Happy trolling.

mirrorAttack.js

/*!
 * Mirror Attack JS
 * Twitter: @KernelCurry
 * http://www.kernelcurry.com
 * @link https://gist.github.com/michaelcurry/7576007 
 *
 * Include to mirror a web page. jQuery not required. Happy trolling.
 * 
 */

window.onload=function(){
	cssify('body','-webkit-transform: rotateY(180deg);');
	cssify('body','-moz-transform: rotateY(180deg);');
	cssify('body','-o-transform: rotateY(180deg);');
	cssify('body','transform: rotateY(180deg);');
	cssify('body','ms-filter: "progid:DXImageTransform.Microsoft.BasicImage(rotation=2)";');
	cssify('body','filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=2);');

	function cssify ( selector, styles )
	{
		try {
			style = document.getElementById('myCustomStyleID');
			temp = style.innerHTML;
			style.innerHTML = temp + selector + "{ " + styles + "}\n";
		}
		catch (err)
		{
			style = document.createElement("style");
			style.id = 'myCustomStyleID'
			style.setAttribute('type', 'text/css');
			style.innerHTML = selector + "{ " + styles + " }\n";
			document.head.insertBefore(style,document.head.childNodes[0]);
		}
	}
};