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/*****************************************************************************
 *
 * Sarissa XML library version 0.9.6
 * Copyright (c) 2003 Manos Batsis, 
 * mailto: mbatsis at users full stop sourceforge full stop net
 * This software is distributed under the Kupu License. See
 * LICENSE.txt for license text. See the Sarissa homepage at
 * http://sarissa.sourceforge.net for more information.
 *
 *****************************************************************************

 * ====================================================================
 * About
 * ====================================================================
 * Sarissa cross browser XML library 
 * @version 0.9.6
 * @author: Manos Batsis, mailto: mbatsis at users full stop sourceforge full stop net
 *
 * Sarissa is an ECMAScript library acting as a cross-browser wrapper for native XML APIs.
 * The library supports Gecko based browsers like Mozilla and Firefox,
 * Internet Explorer (5.5+ with MSXML3.0+) and, last but not least, KHTML based browsers like
 * Konqueror and Safari.
 *
 */
/**
 * 
Sarissa is a utility class. Provides static methods for DOMDocument and 
 * XMLHTTP objects, DOM Node serializatrion to XML strings and other goodies.
 * @constructor
 */
function Sarissa(){};
/** @private */
Sarissa.PARSED_OK = "Document contains no parsing errors";
/**
 * Tells you whether transformNode and transformNodeToObject are available. This functionality
 * is contained in sarissa_ieemu_xslt.js and is deprecated. If you want to control XSLT transformations
 * use the XSLTProcessor
 * @deprecated
 * @type boolean
 */
Sarissa.IS_ENABLED_TRANSFORM_NODE = false;
/**
 * tells you whether XMLHttpRequest (or equivalent) is available
 * @type boolean
 */
Sarissa.IS_ENABLED_XMLHTTP = false;
/**
 * tells you whether selectNodes/selectSingleNode is available
 * @type boolean
 */
Sarissa.IS_ENABLED_SELECT_NODES = false;
var _sarissa_iNsCounter = 0;
var _SARISSA_IEPREFIX4XSLPARAM = "";
var _SARISSA_HAS_DOM_IMPLEMENTATION = document.implementation && true;
var _SARISSA_HAS_DOM_CREATE_DOCUMENT = _SARISSA_HAS_DOM_IMPLEMENTATION && document.implementation.createDocument;
var _SARISSA_HAS_DOM_FEATURE = _SARISSA_HAS_DOM_IMPLEMENTATION && document.implementation.hasFeature;
var _SARISSA_IS_MOZ = _SARISSA_HAS_DOM_CREATE_DOCUMENT && _SARISSA_HAS_DOM_FEATURE;
var _SARISSA_IS_SAFARI = navigator.userAgent.toLowerCase().indexOf("applewebkit") != -1;
var _SARISSA_IS_IE = document.all && window.ActiveXObject && navigator.userAgent.toLowerCase().indexOf("msie") > -1  && navigator.userAgent.toLowerCase().indexOf("opera") == -1;

if(!window.Node || !window.Node.ELEMENT_NODE){
    var Node = {ELEMENT_NODE: 1, ATTRIBUTE_NODE: 2, TEXT_NODE: 3, CDATA_SECTION_NODE: 4, ENTITY_REFERENCE_NODE: 5,  ENTITY_NODE: 6, PROCESSING_INSTRUCTION_NODE: 7, COMMENT_NODE: 8, DOCUMENT_NODE: 9, DOCUMENT_TYPE_NODE: 10, DOCUMENT_FRAGMENT_NODE: 11, NOTATION_NODE: 12};
};

// IE initialization
if(_SARISSA_IS_IE){
    // for XSLT parameter names, prefix needed by IE
    _SARISSA_IEPREFIX4XSLPARAM = "xsl:";
    // used to store the most recent ProgID available out of the above
    var _SARISSA_DOM_PROGID = "";
    var _SARISSA_XMLHTTP_PROGID = "";
    /**
     * Called when the Sarissa_xx.js file is parsed, to pick most recent
     * ProgIDs for IE, then gets destroyed.
     * @param idList an array of MSXML PROGIDs from which the most recent will be picked for a given object
     * @param enabledList an array of arrays where each array has two items; the index of the PROGID for which a certain feature is enabled
     */
    pickRecentProgID = function (idList, enabledList){
        // found progID flag
        var bFound = false;
        for(var i=0; i < idList.length && !bFound; i++){
            try{
                var oDoc = new ActiveXObject(idList[i]);
                o2Store = idList[i];
                bFound = true;
                for(var j=0;j");
                // don't use the same prefix again
                ++_sarissa_iNsCounter;
            }
            else
                oDoc.loadXML("<" + sName + "/>");
        };
        return oDoc;
    };
    // see non-IE version   
    Sarissa.getParseErrorText = function (oDoc) {
        var parseErrorText = Sarissa.PARSED_OK;
        if(oDoc.parseError != 0){
            parseErrorText = "XML Parsing Error: " + oDoc.parseError.reason + 
                "\nLocation: " + oDoc.parseError.url + 
                "\nLine Number " + oDoc.parseError.line + ", Column " + 
                oDoc.parseError.linepos + 
                ":\n" + oDoc.parseError.srcText +
                "\n";
            for(var i = 0;  i < oDoc.parseError.linepos;i++){
                parseErrorText += "-";
            };
            parseErrorText +=  "^\n";
        };
        return parseErrorText;
    };
    // see non-IE version
    Sarissa.setXpathNamespaces = function(oDoc, sNsSet) {
        oDoc.setProperty("SelectionLanguage", "XPath");
        oDoc.setProperty("SelectionNamespaces", sNsSet);
    };   
    /**
     * Basic implementation of Mozilla's XSLTProcessor for IE. 
     * Reuses the same XSLT stylesheet for multiple transforms
     * @constructor
     */
    XSLTProcessor = function(){
        this.template = new ActiveXObject(_SARISSA_XSLTEMPLATE_PROGID);
        this.processor = null;
    };
    /**
     * Impoprts the given XSLT DOM and compiles it to a reusable transform
     * @argument xslDoc The XSLT DOMDocument to import
     */
    XSLTProcessor.prototype.importStylesheet = function(xslDoc){
        // convert stylesheet to free threaded
        var converted = new ActiveXObject(_SARISSA_THREADEDDOM_PROGID); 
        converted.loadXML(xslDoc.xml);
        this.template.stylesheet = converted;
        this.processor = this.template.createProcessor();
        // (re)set default param values
        this.paramsSet = new Array();
    };
    /**
     * Transform the given XML DOM
     * @argument sourceDoc The XML DOMDocument to transform
     * @return The transformation result as a DOM Document
     */
    XSLTProcessor.prototype.transformToDocument = function(sourceDoc){
        this.processor.input = sourceDoc;
        var outDoc = new ActiveXObject(_SARISSA_DOM_PROGID);
        this.processor.output = outDoc; 
        this.processor.transform();
        return outDoc;
    };
    /**
     * Not sure if this works in IE. Maybe this will allow non-well-formed
     * transformation results (i.e. with no single root element)
     * @argument sourceDoc The XML DOMDocument to transform
     * @return The transformation result as a DOM Fragment
     */
    XSLTProcessor.prototype.transformToFragment = function(sourceDoc, ownerDocument){
        return this.transformToDocument(sourceDoc);
    };
    /**
     * Set global XSLT parameter of the imported stylesheet
     * @argument nsURI The parameter namespace URI
     * @argument name The parameter base name
     * @argument value The new parameter value
     */
    XSLTProcessor.prototype.setParameter = function(nsURI, name, value){
        /* nsURI is optional but cannot be null */
        if(nsURI){
            this.processor.addParameter(name, value, nsURI);
        }else{
            this.processor.addParameter(name, value);
        };
        /* update updated params for getParameter */
        if(!this.paramsSet[""+nsURI]){
            this.paramsSet[""+nsURI] = new Array();
        };
        this.paramsSet[""+nsURI][name] = value;
    };
    /**
     * Gets a parameter if previously set by setParameter. Returns null
     * otherwise
     * @argument name The parameter base name
     * @argument value The new parameter value
     * @return The parameter value if reviously set by setParameter, null otherwise
     */
    XSLTProcessor.prototype.getParameter = function(nsURI, name){
        if(this.paramsSet[""+nsURI] && this.paramsSet[""+nsURI][name])
            return this.paramsSet[""+nsURI][name];
        else
            return null;
    };
}
else{ /* end IE initialization, try to deal with real browsers now ;-) */
   if(_SARISSA_HAS_DOM_CREATE_DOCUMENT){
        if(window.XMLDocument){
            /**
            * 
Emulate IE's onreadystatechange attribute
            */
            XMLDocument.prototype.onreadystatechange = null;
            /**
            * 
Emulates IE's readyState property, which always gives an integer from 0 to 4:
            * 
1 == LOADING,
            * 
2 == LOADED,
            * 
3 == INTERACTIVE,
            * 
4 == COMPLETED
            */
            XMLDocument.prototype.readyState = 0;
            /**
            * 
Emulate IE's parseError attribute
            */
            XMLDocument.prototype.parseError = 0;

            // NOTE: setting async to false will only work with documents
            // called over HTTP (meaning a server), not the local file system,
            // unless you are using Moz 1.4+.
            // BTW the try>catch block is for 1.4; I haven't found a way to check if
            // the property is implemented without
            // causing an error and I dont want to use user agent stuff for that...
            var _SARISSA_SYNC_NON_IMPLEMENTED = false;
            try{
                /**
                * 
Emulates IE's async property for Moz versions prior to 1.4.
                * It controls whether loading of remote XML files works
                * synchronously or asynchronously.
                */
                XMLDocument.prototype.async = true;
                _SARISSA_SYNC_NON_IMPLEMENTED = true;
            }catch(e){/* trap */};
            /**
            * 
Keeps a handle to the original load() method. Internal use and only
            * if Mozilla version is lower than 1.4
            * @private
            */
            XMLDocument.prototype._sarissa_load = XMLDocument.prototype.load;

            /**
            * 
Overrides the original load method to provide synchronous loading for
            * Mozilla versions prior to 1.4, using an XMLHttpRequest object (if
            * async is set to false)
            * @returns the DOM Object as it was before the load() call (may be  empty)
            */
            XMLDocument.prototype.load = function(sURI) {
                var oDoc = document.implementation.createDocument("", "", null);
                Sarissa.copyChildNodes(this, oDoc);
                this.parseError = 0;
                Sarissa.__setReadyState__(this, 1);
                try {
                    if(this.async == false && _SARISSA_SYNC_NON_IMPLEMENTED) {
                        var tmp = new XMLHttpRequest();
                        tmp.open("GET", sURI, false);
                        tmp.send(null);
                        Sarissa.__setReadyState__(this, 2);
                        Sarissa.copyChildNodes(tmp.responseXML, this);
                        Sarissa.__setReadyState__(this, 3);
                    }
                    else {
                        this._sarissa_load(sURI);
                    };
                }
                catch (objException) {
                    this.parseError = -1;
                }
                finally {
                    if(this.async == false){
                        Sarissa.__handleLoad__(this);
                    };
                };
                return oDoc;
            };
        };//if(window.XMLDocument)

        /**
         * 
Ensures the document was loaded correctly, otherwise sets the
         * parseError to -1 to indicate something went wrong. Internal use
         * @private
         */
        Sarissa.__handleLoad__ = function(oDoc){
            if (!oDoc.documentElement || oDoc.documentElement.tagName == "parsererror")
                oDoc.parseError = -1;
            Sarissa.__setReadyState__(oDoc, 4);
        };
        
        /**
        * 
Attached by an event handler to the load event. Internal use.
        * @private
        */
        _sarissa_XMLDocument_onload = function(){
            Sarissa.__handleLoad__(this);
        };
        
        /**
         * 
Sets the readyState property of the given DOM Document object.
         * Internal use.
         * @private
         * @argument oDoc the DOM Document object to fire the
         *          readystatechange event
         * @argument iReadyState the number to change the readystate property to
         */
        Sarissa.__setReadyState__ = function(oDoc, iReadyState){
            oDoc.readyState = iReadyState;
            if (oDoc.onreadystatechange != null && typeof oDoc.onreadystatechange == "function")
                oDoc.onreadystatechange();
        };
        /**
        * 
Factory method to obtain a new DOM Document object
        * @argument sUri the namespace of the root node (if any)
        * @argument sUri the local name of the root node (if any)
        * @returns a new DOM Document
        */
        Sarissa.getDomDocument = function(sUri, sName){
            var oDoc = document.implementation.createDocument(sUri?sUri:"", sName?sName:"", null);
            oDoc.addEventListener("load", _sarissa_XMLDocument_onload, false);
            return oDoc;
        };        
    };//if(_SARISSA_HAS_DOM_CREATE_DOCUMENT)
};
//==========================================
// Common stuff
//==========================================
if(!window.DOMParser){
    /** 
    * DOMParser is a utility class, used to construct DOMDocuments from XML strings
    * @constructor
    */
    DOMParser = function() {
    };
    /** 
    * Construct a new DOM Document from the given XMLstring
    * @param sXml the given XML string
    * @param contentType the content type of the document the given string represents (one of text/xml, application/xml, application/xhtml+xml). 
    * @return a new DOM Document from the given XML string
    */
    DOMParser.prototype.parseFromString = function(sXml, contentType){
        var doc = Sarissa.getDomDocument();
        doc.loadXML(sXml);
        return doc;
    };
    
};

if(window.XMLHttpRequest){
    Sarissa.IS_ENABLED_XMLHTTP = true;
}
else if(_SARISSA_IS_IE){
    /**
     * Emulate XMLHttpRequest
     * @constructor
     */
    XMLHttpRequest = function() {
        return new ActiveXObject(_SARISSA_XMLHTTP_PROGID);
    };
    Sarissa.IS_ENABLED_XMLHTTP = true;
};

if(!window.document.importNode && _SARISSA_IS_IE){
    try{
        /**
        * Implements importNode for the current window document in IE using innerHTML.
        * Testing showed that DOM was multiple times slower than innerHTML for this,
        * sorry folks. If you encounter trouble (who knows what IE does behind innerHTML)
        * please gimme a call.
        * @param oNode the Node to import
        * @param bChildren whether to include the children of oNode
        * @returns the imported node for further use
        */
        window.document.importNode = function(oNode, bChildren){
            var importNode = document.createElement("div");
            if(bChildren)
                importNode.innerHTML = Sarissa.serialize(oNode);
            else
                importNode.innerHTML = Sarissa.serialize(oNode.cloneNode(false));
            return importNode.firstChild;
        };
        }catch(e){};
};
if(!Sarissa.getParseErrorText){
    /**
     * 
Returns a human readable description of the parsing error. Usefull
     * for debugging. Tip: append the returned error string in a <pre>
     * element if you want to render it.
     * 
Many thanks to Christian Stocker for the initial patch.
     * @argument oDoc The target DOM document
     * @returns The parsing error description of the target Document in
     *          human readable form (preformated text)
     */
    Sarissa.getParseErrorText = function (oDoc){
        var parseErrorText = Sarissa.PARSED_OK;
        if(oDoc.parseError != 0){
            /*moz*/
            if(oDoc.documentElement.tagName == "parsererror"){
                parseErrorText = oDoc.documentElement.firstChild.data;
                parseErrorText += "\n" +  oDoc.documentElement.firstChild.nextSibling.firstChild.data;
            }/*konq*/
            else if(oDoc.documentElement.tagName == "html"){
                parseErrorText = Sarissa.getText(oDoc.documentElement.getElementsByTagName("h1")[0], false) + "\n";
                parseErrorText += Sarissa.getText(oDoc.documentElement.getElementsByTagName("body")[0], false) + "\n";
                parseErrorText += Sarissa.getText(oDoc.documentElement.getElementsByTagName("pre")[0], false);
            };
        };
        return parseErrorText;
    };
};
Sarissa.getText = function(oNode, deep){
    var s = "";
    var nodes = oNode.childNodes;
    for(var i=0; i < nodes.length; i++){
        var node = nodes[i];
        var nodeType = node.nodeType;
        if(nodeType == Node.TEXT_NODE || nodeType == Node.CDATA_SECTION_NODE){
            s += node.data;
        }
        else if(deep == true
                    && (nodeType == Node.ELEMENT_NODE
                        || nodeType == Node.DOCUMENT_NODE
                        || nodeType == Node.DOCUMENT_FRAGMENT_NODE)){
            s += Sarissa.getText(node, true);
        };
    };
    return s;
};
if(window.XMLSerializer){
    /**
     * 
Factory method to obtain the serialization of a DOM Node
     * @returns the serialized Node as an XML string
     */
    Sarissa.serialize = function(oDoc){
        return (new XMLSerializer()).serializeToString(oDoc);
    };
}else{
    if((Sarissa.getDomDocument("","foo", null)).xml){
        // see non-IE version
        Sarissa.serialize = function(oDoc) {
            // TODO: check for HTML document and return innerHTML instead
            return oDoc.xml;
        };
        /**
         * Utility class to serialize DOM Node objects to XML strings
         * @constructor
         */
        XMLSerializer = function(){};
        /**
         * Serialize the given DOM Node to an XML string
         * @param oNode the DOM Node to serialize
         */
        XMLSerializer.prototype.serializeToString = function(oNode) {
            return oNode.xml;
        };
    };
};

/**
 * strips tags from a markup string
 */
Sarissa.stripTags = function (s) {
    return s.replace(/<[^>]+>/g,"");
};
/**
 * 
Deletes all child nodes of the given node
 * @argument oNode the Node to empty
 */
Sarissa.clearChildNodes = function(oNode) {
    while(oNode.hasChildNodes()){
        oNode.removeChild(oNode.firstChild);
    };
};
/**
 * 
 Copies the childNodes of nodeFrom to nodeTo
 * 
 Note: The second object's original content is deleted before 
 * the copy operation, unless you supply a true third parameter
 * @argument nodeFrom the Node to copy the childNodes from
 * @argument nodeTo the Node to copy the childNodes to
 * @argument bPreserveExisting whether to preserve the original content of nodeTo, default is false
 */
Sarissa.copyChildNodes = function(nodeFrom, nodeTo, bPreserveExisting) {
    if(!bPreserveExisting){
        Sarissa.clearChildNodes(nodeTo);
    };
    var ownerDoc = nodeTo.nodeType == Node.DOCUMENT_NODE ? nodeTo : nodeTo.ownerDocument;
    var nodes = nodeFrom.childNodes;
    if(ownerDoc.importNode && (!_SARISSA_IS_IE)) {
        for(var i=0;i < nodes.length;i++) {
            nodeTo.appendChild(ownerDoc.importNode(nodes[i], true));
        };
    }
    else{
        for(var i=0;i < nodes.length;i++) {
            nodeTo.appendChild(nodes[i].cloneNode(true));
        };
    };
};

/**
 * 
 Moves the childNodes of nodeFrom to nodeTo
 * 
 Note: The second object's original content is deleted before 
 * the move operation, unless you supply a true third parameter
 * @argument nodeFrom the Node to copy the childNodes from
 * @argument nodeTo the Node to copy the childNodes to
 * @argument bPreserveExisting whether to preserve the original content of nodeTo, default is false
 */
Sarissa.moveChildNodes = function(nodeFrom, nodeTo, bPreserveExisting) {
    if(!bPreserveExisting){
        Sarissa.clearChildNodes(nodeTo);
    };
    
    var nodes = nodeFrom.childNodes;
    // if within the same doc, just move, else copy and delete
    if(nodeFrom.ownerDocument == nodeTo.ownerDocument){
        nodeTo.appendChild(nodes[i]);
    }else{
        var ownerDoc = nodeTo.nodeType == Node.DOCUMENT_NODE ? nodeTo : nodeTo.ownerDocument;
         if(ownerDoc.importNode && (!_SARISSA_IS_IE)) {
            for(var i=0;i < nodes.length;i++) {
                nodeTo.appendChild(ownerDoc.importNode(nodes[i], true));
            };
        }
        else{
            for(var i=0;i < nodes.length;i++) {
                nodeTo.appendChild(nodes[i].cloneNode(true));
            };
        };
        Sarissa.clearChildNodes(nodeFrom);
    };
    
};

/** 
 * 
Serialize any object to an XML string. All properties are serialized using the property name
 * as the XML element name. Array elements are rendered as array-item elements, 
 * using their index/key as the value of the key attribute.
 * @argument anyObject the object to serialize
 * @argument objectName a name for that object
 * @return the XML serializationj of the given object as a string
 */
Sarissa.xmlize = function(anyObject, objectName, indentSpace){
    indentSpace = indentSpace?indentSpace:'';
    var s = indentSpace  + '<' + objectName + '>';
    var isLeaf = false;
    if(!(anyObject instanceof Object) || anyObject instanceof Number || anyObject instanceof String 
        || anyObject instanceof Boolean || anyObject instanceof Date){
        s += Sarissa.escape(""+anyObject);
        isLeaf = true;
    }else{
        s += "\n";
        var itemKey = '';
        var isArrayItem = anyObject instanceof Array;
        for(var name in anyObject){
            s += Sarissa.xmlize(anyObject[name], (isArrayItem?"array-item key=\""+name+"\"":name), indentSpace + "   ");
        };
        s += indentSpace;
    };
    return s += (objectName.indexOf(' ')!=-1?"\n":"\n");
};

/** 
 * Escape the given string chacters that correspond to the five predefined XML entities
 * @param sXml the string to escape
 */
Sarissa.escape = function(sXml){
    return sXml.replace(/&/g, "&")
        .replace(//g, ">")
        .replace(/"/g, """)
        .replace(/'/g, "'");
};

/** 
 * Unescape the given string. This turns the occurences of the predefined XML 
 * entities to become the characters they represent correspond to the five predefined XML entities
 * @param sXml the string to unescape
 */
Sarissa.unescape = function(sXml){
    return sXml.replace(/'/g,"'")
        .replace(/"/g,"\"")
        .replace(/>/g,">")
        .replace(/</g,"<")
        .replace(/&/g,"&");
};
//   EOF