Metacat

// This is a third party JavaScript library from

// http://webfx.eae.net/dhtml/xmlextras/xmlextras.html

// i.e. This has not been written by ThoughtWorks.

//<script>

//////////////////

// Helper Stuff //

//////////////////

// used to find the Automation server name

function getDomDocumentPrefix() {

	if (getDomDocumentPrefix.prefix)

		return getDomDocumentPrefix.prefix;

	var prefixes = ["MSXML2", "Microsoft", "MSXML", "MSXML3"];

	var o;

	for (var i = 0; i < prefixes.length; i++) {

		try {

			// try to create the objects

			o = new ActiveXObject(prefixes[i] + ".DomDocument");

			return getDomDocumentPrefix.prefix = prefixes[i];

		}

		catch (ex) {};

	}

	throw new Error("Could not find an installed XML parser");

}

function getXmlHttpPrefix() {

	if (getXmlHttpPrefix.prefix)

		return getXmlHttpPrefix.prefix;

	var prefixes = ["MSXML2", "Microsoft", "MSXML", "MSXML3"];

	var o;

	for (var i = 0; i < prefixes.length; i++) {

		try {

			// try to create the objects

			o = new ActiveXObject(prefixes[i] + ".XmlHttp");

			return getXmlHttpPrefix.prefix = prefixes[i];

		}

		catch (ex) {};

	}

	throw new Error("Could not find an installed XML parser");

}

//////////////////////////

// Start the Real stuff //

//////////////////////////

// XmlHttp factory

function XmlHttp() {}

XmlHttp.create = function () {

	try {

		if (window.XMLHttpRequest) {

			var req = new XMLHttpRequest();

			// some versions of Moz do not support the readyState property

			// and the onreadystate event so we patch it!

			if (req.readyState == null) {

				req.readyState = 1;

				req.addEventListener("load", function () {

					req.readyState = 4;

					if (typeof req.onreadystatechange == "function")

						req.onreadystatechange();

				}, false);

			}

			return req;

		}

		if (window.ActiveXObject) {

			return new ActiveXObject(getXmlHttpPrefix() + ".XmlHttp");

		}

	}

	catch (ex) {}

	// fell through

	throw new Error("Your browser does not support XmlHttp objects");

};

// XmlDocument factory

function XmlDocument() {}

XmlDocument.create = function () {

	try {

		// DOM2

		if (document.implementation && document.implementation.createDocument) {

			var doc = document.implementation.createDocument("", "", null);

			// some versions of Moz do not support the readyState property

			// and the onreadystate event so we patch it!

			if (doc.readyState == null) {

				doc.readyState = 1;

				doc.addEventListener("load", function () {

					doc.readyState = 4;

					if (typeof doc.onreadystatechange == "function")

						doc.onreadystatechange();

				}, false);

			}

			return doc;

		}

		if (window.ActiveXObject)

			return new ActiveXObject(getDomDocumentPrefix() + ".DomDocument");

	}

	catch (ex) {}

	throw new Error("Your browser does not support XmlDocument objects");

};

// Create the loadXML method and xml getter for Mozilla

if (window.DOMParser &&

	window.XMLSerializer &&

	window.Node && Node.prototype && Node.prototype.__defineGetter__) {

	// XMLDocument did not extend the Document interface in some versions

	// of Mozilla. Extend both!

	//XMLDocument.prototype.loadXML = 

	Document.prototype.loadXML = function (s) {

		// parse the string to a new doc	

		var doc2 = (new DOMParser()).parseFromString(s, "text/xml");

		// remove all initial children

		while (this.hasChildNodes())

			this.removeChild(this.lastChild);

		// insert and import nodes

		for (var i = 0; i < doc2.childNodes.length; i++) {

			this.appendChild(this.importNode(doc2.childNodes[i], true));

		}

	};

	/*

	 * xml getter

	 *

	 * This serializes the DOM tree to an XML String

	 *

	 * Usage: var sXml = oNode.xml

	 *

	 */

	// XMLDocument did not extend the Document interface in some versions

	// of Mozilla. Extend both!

	/*

	XMLDocument.prototype.__defineGetter__("xml", function () {

		return (new XMLSerializer()).serializeToString(this);

	});

	*/

	Document.prototype.__defineGetter__("xml", function () {

		return (new XMLSerializer()).serializeToString(this);

	});

}