var zXml = {
    useActiveX: (typeof ActiveXObject != "undefined"),
    useDom: document.implementation && document.implementation.createDocument,
    useXmlHttp: (typeof XMLHttpRequest != "undefined")
};
zXml.ARR_XMLHTTP_VERS = ["MSXML2.XmlHttp.5.0", "MSXML2.XmlHttp.4.0", "MSXML2.XmlHttp.3.0", "MSXML2.XmlHttp", "Microsoft.XmlHttp"];
zXml.ARR_DOM_VERS = ["MSXML2.DOMDocument.5.0", "MSXML2.DOMDocument.4.0", "MSXML2.DOMDocument.3.0", "MSXML2.DOMDocument", "Microsoft.XmlDom"];

function zXmlHttp(){
}

zXmlHttp.createRequest = function(){
    if (zXml.useXmlHttp) {
        return new XMLHttpRequest();
    }
    else 
        if (zXml.useActiveX) {
            if (!zXml.XMLHTTP_VER) {
                for (var i = 0; i < zXml.ARR_XMLHTTP_VERS.length; i++) {
                    try {
                        new ActiveXObject(zXml.ARR_XMLHTTP_VERS[i]);
                        zXml.XMLHTTP_VER = zXml.ARR_XMLHTTP_VERS[i];
                        break;
                    } 
                    catch (oError) {
                        
                    }
                }
            }
            if (zXml.XMLHTTP_VER) {
                return new ActiveXObject(zXml.XMLHTTP_VER);
            }
            else {
                throw new Error("Could not create XML HTTP Request.");
            }
        }
        else {
            throw new Error("Your browser doesn't support an XML HTTP Request.");
        }
};
zXmlHttp.isSupported = function(){
    return zXml.useXmlHttp || zXml.useActiveX;
};
function zXmlDom(){
}

zXmlDom.createDocument = function(){
    if (zXml.useDom) {
        var oXmlDom = document.implementation.createDocument("", "", null);
        oXmlDom.parseError = {
            valueOf: function(){
                return this.errorCode;
            },
            toString: function(){
                return this.errorCode.toString();
            }
        };
        oXmlDom.__initError__();
        oXmlDom.addEventListener("load", function(){
            this.__checkForErrors__();
            this.__changeReadyState__(4);
        }, false);
        return oXmlDom;
    }
    else 
        if (zXml.useActiveX) {
            if (!zXml.DOM_VER) {
                for (var i = 0; i < zXml.ARR_DOM_VERS.length; i++) {
                    try {
                        new ActiveXObject(zXml.ARR_DOM_VERS[i]);
                        zXml.DOM_VER = zXml.ARR_DOM_VERS[i];
                        break;
                    } 
                    catch (oError) {
                    }
                }
            }
            if (zXml.DOM_VER) {
                return new ActiveXObject(zXml.DOM_VER);
            }
            else {
                throw new Error("Could not create XML DOM document.");
            }
        }
        else {
            throw new Error("Your browser doesn't support an XML DOM document.");
        }
};
zXmlDom.isSupported = function(){
    return zXml.useDom || zXml.useActiveX;
};
var oMozDocument = null;
if (typeof XMLDocument != "undefined") {
    oMozDocument = XMLDocument;
}
else 
    if (typeof Document != "undefined") {
        oMozDocument = Document;
    }
if (oMozDocument && !window.opera) {
    oMozDocument.prototype.readyState = 0;
    oMozDocument.prototype.onreadystatechange = null;
    oMozDocument.prototype.__changeReadyState__ = function(iReadyState){
        this.readyState = iReadyState;
        if (typeof this.onreadystatechange == "function") {
            this.onreadystatechange();
        }
    };
    oMozDocument.prototype.__initError__ = function(){
        this.parseError.errorCode = 0;
        this.parseError.filepos = -1;
        this.parseError.line = -1;
        this.parseError.linepos = -1;
        this.parseError.reason = null;
        this.parseError.srcText = null;
        this.parseError.url = null;
    };
    oMozDocument.prototype.__checkForErrors__ = function(){
        if (this.documentElement.tagName == "parsererror") {
            var reError = />([\s\S]*?)Location:([\s\S]*?)Line Number(\d+),Column(\d+):<sourcetext>([\s\S]*?)(?:\-*\^)/;
            reError.test(this.xml);
            this.parseError.errorCode = -999999;
            this.parseError.reason = RegExp.$1;
            this.parseError.url = RegExp.$2;
            this.parseError.line = parseInt(RegExp.$3,10);
            this.parseError.linepos = parseInt(RegExp.$4,10);
            this.parseError.srcText = RegExp.$5;
        }
    };
    oMozDocument.prototype.loadXML = function(sXml){
        this.__initError__();
        this.__changeReadyState__(1);
        var oParser = new DOMParser();
        var oXmlDom = oParser.parseFromString(sXml, "text/xml");
        while (this.firstChild) {
            this.removeChild(this.firstChild);
        }
        for (var i = 0; i < oXmlDom.childNodes.length; i++) {
            var oNewNode = this.importNode(oXmlDom.childNodes[i], true);
            this.appendChild(oNewNode);
        }
        this.__checkForErrors__();
        this.__changeReadyState__(4);
    };
    oMozDocument.prototype.__load__ = oMozDocument.prototype.load;
    oMozDocument.prototype.load = function(sURL){
        this.__initError__();
        this.__changeReadyState__(1);
        this.__load__(sURL);
    };
    Node.prototype.__defineGetter__("xml", function(){
        var oSerializer = new XMLSerializer();
        return oSerializer.serializeToString(this, "text/xml");
    });
    Node.prototype.__defineGetter__("text", function(){
        var sText = "";
        for (var i = 0; i < this.childNodes.length; i++) {
            if (this.childNodes[i].hasChildNodes()) {
                sText += this.childNodes[i].text;
            }
            else {
                sText += this.childNodes[i].nodeValue;
            }
        }
        return sText;
    });
}
function zXslt(){
}

zXslt.transformToText = function(oXml, oXslt){
    if (typeof XSLTProcessor != "undefined") {
        var oProcessor = new XSLTProcessor();
        oProcessor.importStylesheet(oXslt);
        var oResultDom = oProcessor.transformToDocument(oXml);
        var sResult = oResultDom.xml;
        if (sResult.indexOf("<transformiix:result") > -1) {
            sResult = sResult.substring(sResult.indexOf(">") + 1, sResult.lastIndexOf("<"));
        }
        return sResult;
    }
    else 
        if (zXml.useActiveX) {
            return oXml.transformNode(oXslt);
        }
        else {
            throw new Error("No XSLT engine found.");
        }
};
function zXPath(){
}

zXPath.selectNodes = function(oRefNode, sXPath, sXmlNs){
    if (typeof XPathEvaluator != "undefined") {
        oXmlNs = oXmlNs ||
        {};
        var nsResolver = function(sPrefix){
            return oXmlNs[sPrefix];
        };
        var oEvaluator = new XPathEvaluator();
        var oResult = oEvaluator.evaluate(sXPath, oRefNode, nsResolver, XPathResult.ORDERED_NODE_ITERATOR_TYPE, null);
        var aNodes = [];
        if (oResult != null) {
            var oElement = oResult.iterateNext();
            while (oElement) {
                aNodes.push(oElement);
                oElement = oResult.iterateNext();
            }
        }
        return aNodes;
    }
    else 
        if (zXml.useActiveX) {
            if (oXmlNs) {
                var sXmlNs = "";
                for (var sProp in oXmlNs) {
                    sXmlNs += "xmlns:" + sProp + "=" + oXmlNs[sProp] + " ";
                }
                oRefNode.ownerDocument.setProperty("SelectionNamespaces", sXmlNs);
            }
            return oRefNode.selectNodes(sXPath);
        }
        else {
            throw new Error("No XPath engine found.");
        }
};
zXPath.selectSingleNode = function(oRefNode, sXPath, oXmlNs){
    if (typeof XPathEvaluator != "undefined") {
        oXmlNs = oXmlNs ||
        {};
        var nsResolver = function(sPrefix){
            return oXmlNs[sPrefix];
        };
        var oEvaluator = new XPathEvaluator();
        var oResult = oEvaluator.evaluate(sXPath, oRefNode, nsResolver, XPathResult.FIRST_ORDERED_NODE_TYPE, null);
        if (oResult != null) {
            return oResult.singleNodeValue;
        }
        else {
            return null;
        }
    }
    else 
        if (zXML.useActiveX) {
            if (oXmlNs) {
                var sXmlNs = "";
                for (var sProp in oXmlNs) {
                    sXmlNs += "xmlns:" + sProp + "=" + oXmlNs[sProp] + " ";
                }
                oRefNode.ownerDocument.setProperty("SelectionNamespaces", sXmlNs);
            }
            return oRefNode.selectSingleNode(sXPath);
        }
        else {
            throw new Error("No XPath engine found.");
        }
};
function zXMLSerializer(){
}

zXMLSerializer.prototype.serializeToString = function(oNode){
    var sXml = "";
    switch (oNode.nodeType) {
        case 1:
            sXml = "<" + oNode.tagName;
            for (var i = 0; i < oNode.attributes.length; i++) {
                sXml += " " + oNode.attributes[i].name + "=\"" + oNode.attributes[i].value + "\"";
            }
            sXml += ">";
            for (var i = 0; i < oNode.childNodes.length; i++) {
                sXml += this.serializeToString(oNode.childNodes[i]);
            }
            sXml += "</" + oNode.tagName + ">";
            break;
        case 3:
            sXml = oNode.nodeValue;
            break;
        case 4:
            sXml = "<![CDATA[" + oNode.nodeValue + "]]>";
            break;
        case 7:
            sXml = "<?" + oNode.nodevalue + "?>";
            break;
        case 8:
            sXml = "<!--" + oNode.nodevalue + "-->";
            break;
        case 9:
            for (var i = 0; i < oNode.childNodes.length; i++) {
                sXml += this.serializeToString(oNode.childNodes[i]);
            }
            break;
    }
    return sXml;
};