change.js

gistfile1.js

if (!window.addEventListener){
	Element.NativeEvents.propertychange = 2;
	Element.Events.change = {
		base: function(){
			var type = this.type;
			return (this.get('tag') == 'input' && (type == 'radio' || type == 'checkbox')) ? 'propertychange' : 'change'
		},
		condition: function(event){
			return (this.type == 'radio' && !this.checked) ? false : true;
		}
	}
}