jquery.supports.DOMElement.js

jQuery.extend(jQuery.support, {
	DOMElement: function(element, attribute) {
		var test = document.createElement(element); // turns out native function is fastest (http://stackoverflow.com/questions/268490/jquery-document-createelement-equivalent)
		if (test) {
			if ( attribute != null )
				return (attribute in test)
			else 
				return true
		} 
		
		return false;
	}
});