// Anything not (C)opyright Google is (C)opyright follower@myrealbox.com
function _initStandAlone() {
    //
    // Initialises standalone mode.
    //
    // Call the standard Gmaps routine
    _createMap();
    // Enable off-domain file retrieval
    _hookXmlHttpRequestFactory();
    _loadExternalXmlFile(_getInitialUrl());
}

function _getInitialUrl() {
    //
    // Extracts the initial url.
    //
    // Note: This method is a little crass, but allows for easy passing
    //       of arguments to target scripts.
    //
    //       We could use something like `getArgs()` from:
    //
    //         <http://www.oreilly.com/catalog/jscript3/chapter/ch13.html>
    //
    //       I hereby state any parameter before the "url" parameter we'll
    //       assume is for us, otherwise we'll include it as part of the URL.
    //
    var urlOffset = document.location.search.indexOf("url=") + "url=".length;
    return document.location.search.substring(urlOffset);
}

var URL_GETFILE_CGI = "/cgi-bin/getrawfile.cgi?url=";

function _hookXmlHttpRequestFactory() {
    //
    // Enables off-domain file retrieval by sending all requests
    // via our on-domain file retrieval helper script.
    //
    // Note: Mozilla based browsers can handle wrapping just the `open`
    // method but IE requires us to wrap the whole object, so
    // in order to have only one code version we just wrap the whole
    // object for everyone.
    //
    _XMLHttp._create = _XMLHttp.create;
    _XMLHttp.create = function () {
    return new _XmlHttpRequestEx2(this._create());
    }
}

function _XmlHttpRequestEx2(proxee) {
    //
    // Allows off-site document retrieval with assistance of
    // a script on the host server.
    //
    this._proxee = proxee;
}
_XmlHttpRequestEx2.prototype.open = function (method, url) {
    //
    //
    //
    if (url[0] == "/") {
        // Patch Gmaps urls
        url = "http://maps.google.com" + url;
    }
    url = URL_GETFILE_CGI + url;
    return this._proxee.open(method, url);
}
_XmlHttpRequestEx2.prototype.send = function (content) {
    //
    //
    // TODO: Can we do this automatically?
    this._proxee.onreadystatechange = _wrapCallback(this);
    return this._proxee.send(content);
}

_wrapCallback = function (_this) {
    //
    // Wrap the caller supplied callback so we prepare items
    // before calling it proper.
    //
    return function () {
    _this.readyState = _this._proxee.readyState;
     if (_this.readyState == 4) { // TODO: Use constant.
      _this.responseXML = _this._proxee.responseXML;
      _this.responseText = _this._proxee.responseText;
     }
    _this.onreadystatechange();
  }
}

function _loadExternalXmlFile(externalUrl) {
   //
   // Loads the specified external XML file into the map view.
   //
   var  _getter = _XMLHttp.create();
   _getter.open("GET", externalUrl);
   _getter.onreadystatechange=function() {
     if (_getter.readyState==4) {
      _load(_getter.responseText);
     }
   }
  _getter.send(null); // Whoops, IE *needs* this to be last, Moz is lenient.
}