senocular.com

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// adds a root property that references the document root
// element of an XML instance through any of its nodes
XMLNode.prototype.root = function(){
	var r = this;
	while(r.parentNode) r = r.parentNode;
	return r.firstChild;
}
XMLNode.prototype.addProperty("root",
	function(){
		return this.root();
	},
	function(n){
		r = this.root();
		r.parentNode.appendChild(n);
		r.removeNode();
	}
);