HTMLElement polyfill for IE6-7

HTMLElement.js

if (!window.Element) {
	(function (prototype) {
		function Element() {}

		prototype.runtimeStyle.cssText = 'clip:rect(0 0 0 0);height:0;position:absolute;width:0';

		document.getElementsByTagName('head')[0].appendChild((window.Element = Element).prototype = prototype).attachEvent('onpropertychange', function (event) {
			for (var name = event.propertyName, index = 0, element; element = document.all[index]; ++index) {
				if (element !== prototype) {
					element[name] = prototype[name];
				}
			}
		});
	})(document.createElement('Element'));
}

prototype.runtimeStyle.cssText = 'clip:rect(0 0 0 0);height:0;position:absolute;width:0';

@jonathantneal What's the reason behind this reset?