var bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
  slice = [].slice,
  indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; },
  hasProp = {}.hasOwnProperty;

Poltergeist.WebPage = (function() {
  var command, delegate, fn1, fn2, i, j, len, len1, ref, ref1;

  WebPage.CALLBACKS = ['onConsoleMessage', 'onError', 'onLoadFinished', 'onInitialized', 'onLoadStarted', 'onResourceRequested', 'onResourceReceived', 'onResourceError', 'onResourceTimeout', 'onNavigationRequested', 'onUrlChanged', 'onPageCreated', 'onClosing', 'onCallback'];

  WebPage.DELEGATES = ['url', 'open', 'sendEvent', 'uploadFile', 'render', 'close', 'renderBase64', 'goBack', 'goForward', 'reload'];

  WebPage.COMMANDS = ['find', 'nodeCall', 'documentSize', 'beforeUpload', 'afterUpload', 'clearLocalStorage'];

  WebPage.EXTENSIONS = [];

  function WebPage(_native, settings) {
    var callback, i, len, ref;
    this._native = _native;
    this._checkForAsyncResult = bind(this._checkForAsyncResult, this);
    this._native || (this._native = require('webpage').create());
    this.id = 0;
    this.source = null;
    this.closed = false;
    this.state = 'default';
    this.urlWhitelist = [];
    this.urlBlacklist = [];
    this.errors = [];
    this._networkTraffic = {};
    this._tempHeaders = {};
    this._blockedUrls = [];
    this._requestedResources = {};
    this._responseHeaders = [];
    this._tempHeadersToRemoveOnRedirect = {};
    this._asyncResults = {};
    this._asyncEvaluationId = 0;
    this.setSettings(settings);
    ref = WebPage.CALLBACKS;
    for (i = 0, len = ref.length; i < len; i++) {
      callback = ref[i];
      this.bindCallback(callback);
    }
    if (phantom.version.major < 2) {
      this._overrideNativeEvaluate();
    }
  }

  ref = WebPage.COMMANDS;
  fn1 = function(command) {
    return WebPage.prototype[command] = function() {
      var args;
      args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      return this.runCommand(command, args);
    };
  };
  for (i = 0, len = ref.length; i < len; i++) {
    command = ref[i];
    fn1(command);
  }

  ref1 = WebPage.DELEGATES;
  fn2 = function(delegate) {
    return WebPage.prototype[delegate] = function() {
      return this._native[delegate].apply(this._native, arguments);
    };
  };
  for (j = 0, len1 = ref1.length; j < len1; j++) {
    delegate = ref1[j];
    fn2(delegate);
  }

  WebPage.prototype.setSettings = function(settings) {
    var results, setting, value;
    if (settings == null) {
      settings = {};
    }
    results = [];
    for (setting in settings) {
      value = settings[setting];
      results.push(this._native.settings[setting] = value);
    }
    return results;
  };

  WebPage.prototype.onInitializedNative = function() {
    this.id += 1;
    this.source = null;
    this.injectAgent();
    this.removeTempHeaders();
    this.removeTempHeadersForRedirect();
    return this.setScrollPosition({
      left: 0,
      top: 0
    });
  };

  WebPage.prototype.onClosingNative = function() {
    this.handle = null;
    return this.closed = true;
  };

  WebPage.prototype.onConsoleMessageNative = function(message) {
    if (message === '__DOMContentLoaded') {
      this.source = this._native.content;
      return false;
    } else {
      return console.log(message);
    }
  };

  WebPage.prototype.onLoadStartedNative = function() {
    this.state = 'loading';
    this.requestId = this.lastRequestId;
    return this._requestedResources = {};
  };

  WebPage.prototype.onLoadFinishedNative = function(status) {
    this.status = status;
    this.state = 'default';
    return this.source || (this.source = this._native.content);
  };

  WebPage.prototype.onErrorNative = function(message, stack) {
    var stackString;
    stackString = message;
    stack.forEach(function(frame) {
      stackString += "\n";
      stackString += "    at " + frame.file + ":" + frame.line;
      if (frame["function"] && frame["function"] !== '') {
        return stackString += " in " + frame["function"];
      }
    });
    this.errors.push({
      message: message,
      stack: stackString
    });
    return true;
  };

  WebPage.prototype.onCallbackNative = function(data) {
    this._asyncResults[data['command_id']] = data['command_result'];
    return true;
  };

  WebPage.prototype.onResourceRequestedNative = function(request, net) {
    var ref2;
    this._networkTraffic[request.id] = {
      request: request,
      responseParts: [],
      error: null
    };
    if (this._blockRequest(request.url)) {
      this._networkTraffic[request.id].blocked = true;
      if (ref2 = request.url, indexOf.call(this._blockedUrls, ref2) < 0) {
        this._blockedUrls.push(request.url);
      }
      net.abort();
    } else {
      this.lastRequestId = request.id;
      if (this.normalizeURL(request.url) === this.redirectURL) {
        this.removeTempHeadersForRedirect();
        this.redirectURL = null;
        this.requestId = request.id;
      }
      this._requestedResources[request.id] = request.url;
    }
    return true;
  };

  WebPage.prototype.onResourceReceivedNative = function(response) {
    var ref2;
    if ((ref2 = this._networkTraffic[response.id]) != null) {
      ref2.responseParts.push(response);
    }
    if (response.stage === 'end') {
      delete this._requestedResources[response.id];
    }
    if (this.requestId === response.id) {
      if (response.redirectURL) {
        this.removeTempHeadersForRedirect();
        this.redirectURL = this.normalizeURL(response.redirectURL);
      } else {
        this.statusCode = response.status;
        this._responseHeaders = response.headers;
      }
    }
    return true;
  };

  WebPage.prototype.onResourceErrorNative = function(errorResponse) {
    var ref2;
    if ((ref2 = this._networkTraffic[errorResponse.id]) != null) {
      ref2.error = errorResponse;
    }
    delete this._requestedResources[errorResponse.id];
    return true;
  };

  WebPage.prototype.onResourceTimeoutNative = function(request) {
    return console.log("Resource request timed out for " + request.url);
  };

  WebPage.prototype.injectAgent = function() {
    var extension, k, len2, ref2;
    if (this["native"]().evaluate(function() {
      return typeof __poltergeist;
    }) === "undefined") {
      this["native"]().injectJs(phantom.libraryPath + "/agent.js");
      ref2 = WebPage.EXTENSIONS;
      for (k = 0, len2 = ref2.length; k < len2; k++) {
        extension = ref2[k];
        this["native"]().injectJs(extension);
      }
      return true;
    }
    return false;
  };

  WebPage.prototype.injectExtension = function(file) {
    WebPage.EXTENSIONS.push(file);
    return this["native"]().injectJs(file);
  };

  WebPage.prototype["native"] = function() {
    if (this.closed) {
      throw new Poltergeist.NoSuchWindowError;
    } else {
      return this._native;
    }
  };

  WebPage.prototype.windowName = function() {
    return this["native"]().windowName;
  };

  WebPage.prototype.keyCode = function(name) {
    if (name === "Ctrl") {
      name = "Control";
    }
    return this["native"]().event.key[name];
  };

  WebPage.prototype.keyModifierCode = function(names) {
    var modifiers;
    modifiers = this["native"]().event.modifier;
    return names.split(',').map(function(name) {
      return modifiers[name];
    }).reduce(function(n1, n2) {
      return n1 | n2;
    });
  };

  WebPage.prototype.keyModifierKeys = function(names) {
    var k, len2, name, ref2, results;
    ref2 = names.split(',');
    results = [];
    for (k = 0, len2 = ref2.length; k < len2; k++) {
      name = ref2[k];
      if (!(name !== 'keypad')) {
        continue;
      }
      name = name.charAt(0).toUpperCase() + name.substring(1);
      results.push(this.keyCode(name));
    }
    return results;
  };

  WebPage.prototype._waitState_until = function(states, callback, timeout, timeout_callback) {
    var ref2;
    if ((ref2 = this.state, indexOf.call(states, ref2) >= 0)) {
      return callback.call(this, this.state);
    } else {
      if (new Date().getTime() > timeout) {
        return timeout_callback.call(this);
      } else {
        return setTimeout(((function(_this) {
          return function() {
            return _this._waitState_until(states, callback, timeout, timeout_callback);
          };
        })(this)), 100);
      }
    }
  };

  WebPage.prototype.waitState = function(states, callback, max_wait, timeout_callback) {
    var ref2, timeout;
    if (max_wait == null) {
      max_wait = 0;
    }
    states = [].concat(states);
    if (ref2 = this.state, indexOf.call(states, ref2) >= 0) {
      return callback.call(this, this.state);
    } else {
      if (max_wait !== 0) {
        timeout = new Date().getTime() + (max_wait * 1000);
        return setTimeout(((function(_this) {
          return function() {
            return _this._waitState_until(states, callback, timeout, timeout_callback);
          };
        })(this)), 100);
      } else {
        return setTimeout(((function(_this) {
          return function() {
            return _this.waitState(states, callback);
          };
        })(this)), 100);
      }
    }
  };

  WebPage.prototype.setHttpAuth = function(user, password) {
    this["native"]().settings.userName = user;
    this["native"]().settings.password = password;
    return true;
  };

  WebPage.prototype.networkTraffic = function(type) {
    var id, ref2, ref3, ref4, request, results, results1, results2;
    switch (type) {
      case 'all':
        ref2 = this._networkTraffic;
        results = [];
        for (id in ref2) {
          if (!hasProp.call(ref2, id)) continue;
          request = ref2[id];
          results.push(request);
        }
        return results;
        break;
      case 'blocked':
        ref3 = this._networkTraffic;
        results1 = [];
        for (id in ref3) {
          if (!hasProp.call(ref3, id)) continue;
          request = ref3[id];
          if (request.blocked) {
            results1.push(request);
          }
        }
        return results1;
        break;
      default:
        ref4 = this._networkTraffic;
        results2 = [];
        for (id in ref4) {
          if (!hasProp.call(ref4, id)) continue;
          request = ref4[id];
          if (!request.blocked) {
            results2.push(request);
          }
        }
        return results2;
    }
  };

  WebPage.prototype.clearNetworkTraffic = function() {
    this._networkTraffic = {};
    return true;
  };

  WebPage.prototype.blockedUrls = function() {
    return this._blockedUrls;
  };

  WebPage.prototype.clearBlockedUrls = function() {
    this._blockedUrls = [];
    return true;
  };

  WebPage.prototype.openResourceRequests = function() {
    var id, ref2, results, url;
    ref2 = this._requestedResources;
    results = [];
    for (id in ref2) {
      if (!hasProp.call(ref2, id)) continue;
      url = ref2[id];
      results.push(url);
    }
    return results;
  };

  WebPage.prototype.content = function() {
    return this["native"]().frameContent;
  };

  WebPage.prototype.title = function() {
    return this["native"]().title;
  };

  WebPage.prototype.frameTitle = function() {
    return this["native"]().frameTitle;
  };

  WebPage.prototype.currentUrl = function() {
    return this["native"]().url;
  };

  WebPage.prototype.frameUrl = function() {
    if (phantom.version.major > 2 || (phantom.version.major === 2 && phantom.version.minor >= 1)) {
      return this["native"]().frameUrl;
    } else {
      return this.runCommand('frameUrl');
    }
  };

  WebPage.prototype.frameUrlFor = function(frameNameOrId) {
    var query;
    query = function(frameNameOrId) {
      var ref2;
      return (ref2 = document.querySelector("iframe[name='" + frameNameOrId + "'], iframe[id='" + frameNameOrId + "']")) != null ? ref2.src : void 0;
    };
    return this.evaluate(query, frameNameOrId);
  };

  WebPage.prototype.clearErrors = function() {
    this.errors = [];
    return true;
  };

  WebPage.prototype.responseHeaders = function() {
    var headers;
    headers = {};
    this._responseHeaders.forEach(function(item) {
      return headers[item.name] = item.value;
    });
    return headers;
  };

  WebPage.prototype.cookies = function() {
    return this["native"]().cookies;
  };

  WebPage.prototype.deleteCookie = function(name) {
    return this["native"]().deleteCookie(name);
  };

  WebPage.prototype.viewportSize = function() {
    return this["native"]().viewportSize;
  };

  WebPage.prototype.setViewportSize = function(size) {
    return this["native"]().viewportSize = size;
  };

  WebPage.prototype.setZoomFactor = function(zoom_factor) {
    return this["native"]().zoomFactor = zoom_factor;
  };

  WebPage.prototype.setPaperSize = function(size) {
    return this["native"]().paperSize = size;
  };

  WebPage.prototype.scrollPosition = function() {
    return this["native"]().scrollPosition;
  };

  WebPage.prototype.setScrollPosition = function(pos) {
    return this["native"]().scrollPosition = pos;
  };

  WebPage.prototype.clipRect = function() {
    return this["native"]().clipRect;
  };

  WebPage.prototype.setClipRect = function(rect) {
    return this["native"]().clipRect = rect;
  };

  WebPage.prototype.elementBounds = function(selector) {
    return this["native"]().evaluate(function(selector) {
      return document.querySelector(selector).getBoundingClientRect();
    }, selector);
  };

  WebPage.prototype.getUserAgent = function() {
    return this["native"]().settings.userAgent;
  };

  WebPage.prototype.setUserAgent = function(userAgent) {
    return this["native"]().settings.userAgent = userAgent;
  };

  WebPage.prototype.getCustomHeaders = function() {
    return this["native"]().customHeaders;
  };

  WebPage.prototype.getPermanentCustomHeaders = function() {
    var allHeaders, name, ref2, ref3, value;
    allHeaders = this.getCustomHeaders();
    ref2 = this._tempHeaders;
    for (name in ref2) {
      value = ref2[name];
      delete allHeaders[name];
    }
    ref3 = this._tempHeadersToRemoveOnRedirect;
    for (name in ref3) {
      value = ref3[name];
      delete allHeaders[name];
    }
    return allHeaders;
  };

  WebPage.prototype.setCustomHeaders = function(headers) {
    return this["native"]().customHeaders = headers;
  };

  WebPage.prototype.addTempHeader = function(header) {
    var name, value;
    for (name in header) {
      value = header[name];
      this._tempHeaders[name] = value;
    }
    return this._tempHeaders;
  };

  WebPage.prototype.addTempHeaderToRemoveOnRedirect = function(header) {
    var name, value;
    for (name in header) {
      value = header[name];
      this._tempHeadersToRemoveOnRedirect[name] = value;
    }
    return this._tempHeadersToRemoveOnRedirect;
  };

  WebPage.prototype.removeTempHeadersForRedirect = function() {
    var allHeaders, name, ref2, value;
    allHeaders = this.getCustomHeaders();
    ref2 = this._tempHeadersToRemoveOnRedirect;
    for (name in ref2) {
      value = ref2[name];
      delete allHeaders[name];
    }
    return this.setCustomHeaders(allHeaders);
  };

  WebPage.prototype.removeTempHeaders = function() {
    var allHeaders, name, ref2, value;
    allHeaders = this.getCustomHeaders();
    ref2 = this._tempHeaders;
    for (name in ref2) {
      value = ref2[name];
      delete allHeaders[name];
    }
    return this.setCustomHeaders(allHeaders);
  };

  WebPage.prototype.pushFrame = function(name) {
    var frame_no;
    if (this["native"]().switchToFrame(name)) {
      return true;
    }
    frame_no = this["native"]().evaluate(function(frame_name) {
      var f, frames, idx;
      frames = document.querySelectorAll("iframe, frame");
      return ((function() {
        var k, len2, results;
        results = [];
        for (idx = k = 0, len2 = frames.length; k < len2; idx = ++k) {
          f = frames[idx];
          if ((f != null ? f['name'] : void 0) === frame_name || (f != null ? f['id'] : void 0) === frame_name) {
            results.push(idx);
          }
        }
        return results;
      })())[0];
    }, name);
    return (frame_no != null) && this["native"]().switchToFrame(frame_no);
  };

  WebPage.prototype.popFrame = function(pop_all) {
    if (pop_all == null) {
      pop_all = false;
    }
    if (pop_all) {
      return this["native"]().switchToMainFrame();
    } else {
      return this["native"]().switchToParentFrame();
    }
  };

  WebPage.prototype.dimensions = function() {
    var scroll, viewport;
    scroll = this.scrollPosition();
    viewport = this.viewportSize();
    return {
      top: scroll.top,
      bottom: scroll.top + viewport.height,
      left: scroll.left,
      right: scroll.left + viewport.width,
      viewport: viewport,
      document: this.documentSize()
    };
  };

  WebPage.prototype.validatedDimensions = function() {
    var dimensions, document;
    dimensions = this.dimensions();
    document = dimensions.document;
    if (dimensions.right > document.width) {
      dimensions.left = Math.max(0, dimensions.left - (dimensions.right - document.width));
      dimensions.right = document.width;
    }
    if (dimensions.bottom > document.height) {
      dimensions.top = Math.max(0, dimensions.top - (dimensions.bottom - document.height));
      dimensions.bottom = document.height;
    }
    this.setScrollPosition({
      left: dimensions.left,
      top: dimensions.top
    });
    return dimensions;
  };

  WebPage.prototype.get = function(id) {
    return new Poltergeist.Node(this, id);
  };

  WebPage.prototype.mouseEvent = function(name, x, y, button, modifiers) {
    if (button == null) {
      button = 'left';
    }
    if (modifiers == null) {
      modifiers = 0;
    }
    this.sendEvent('mousemove', x, y);
    return this.sendEvent(name, x, y, button, modifiers);
  };

  WebPage.prototype.evaluate = function() {
    var args, fn, ref2, result;
    fn = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
    this.injectAgent();
    result = (ref2 = this["native"]()).evaluate.apply(ref2, ["function() { var page_id = arguments[0]; var args = []; for(var i=1; i < arguments.length; i++){ if ((typeof(arguments[i]) == 'object') && (typeof(arguments[i]['ELEMENT']) == 'object')){ args.push(window.__poltergeist.get(arguments[i]['ELEMENT']['id']).element); } else { args.push(arguments[i]) } } var _result = " + (this.stringifyCall(fn, "args")) + "; return window.__poltergeist.wrapResults(_result, page_id); }", this.id].concat(slice.call(args)));
    return result;
  };

  WebPage.prototype.evaluate_async = function() {
    var args, callback, cb, command_id, fn, ref2;
    fn = arguments[0], callback = arguments[1], args = 3 <= arguments.length ? slice.call(arguments, 2) : [];
    command_id = ++this._asyncEvaluationId;
    cb = callback;
    this.injectAgent();
    (ref2 = this["native"]()).evaluate.apply(ref2, ["function(){ var page_id = arguments[0]; var args = []; for(var i=1; i < arguments.length; i++){ if ((typeof(arguments[i]) == 'object') && (typeof(arguments[i]['ELEMENT']) == 'object')){ args.push(window.__poltergeist.get(arguments[i]['ELEMENT']['id']).element); } else { args.push(arguments[i]) } } args.push(function(result){ result = window.__poltergeist.wrapResults(result, page_id); window.callPhantom( { command_id: " + command_id + ", command_result: result } ); }); " + (this.stringifyCall(fn, "args")) + "; return}", this.id].concat(slice.call(args)));
    setTimeout((function(_this) {
      return function() {
        return _this._checkForAsyncResult(command_id, cb);
      };
    })(this), 10);
  };

  WebPage.prototype.execute = function() {
    var args, fn, ref2;
    fn = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
    return (ref2 = this["native"]()).evaluate.apply(ref2, ["function() { for(var i=0; i < arguments.length; i++){ if ((typeof(arguments[i]) == 'object') && (typeof(arguments[i]['ELEMENT']) == 'object')){ arguments[i] = window.__poltergeist.get(arguments[i]['ELEMENT']['id']).element; } } " + (this.stringifyCall(fn)) + " }"].concat(slice.call(args)));
  };

  WebPage.prototype.stringifyCall = function(fn, args_name) {
    if (args_name == null) {
      args_name = "arguments";
    }
    return "(" + (fn.toString()) + ").apply(this, " + args_name + ")";
  };

  WebPage.prototype.bindCallback = function(name) {
    this["native"]()[name] = (function(_this) {
      return function() {
        var result;
        if (_this[name + 'Native'] != null) {
          result = _this[name + 'Native'].apply(_this, arguments);
        }
        if (result !== false && (_this[name] != null)) {
          return _this[name].apply(_this, arguments);
        }
      };
    })(this);
    return true;
  };

  WebPage.prototype.runCommand = function(name, args) {
    var method, result, selector;
    result = this.evaluate(function(name, args) {
      return __poltergeist.externalCall(name, args);
    }, name, args);
    if ((result != null ? result.error : void 0) != null) {
      switch (result.error.message) {
        case 'PoltergeistAgent.ObsoleteNode':
          throw new Poltergeist.ObsoleteNode;
          break;
        case 'PoltergeistAgent.InvalidSelector':
          method = args[0], selector = args[1];
          throw new Poltergeist.InvalidSelector(method, selector);
          break;
        default:
          throw new Poltergeist.BrowserError(result.error.message, result.error.stack);
      }
    } else {
      return result != null ? result.value : void 0;
    }
  };

  WebPage.prototype.canGoBack = function() {
    return this["native"]().canGoBack;
  };

  WebPage.prototype.canGoForward = function() {
    return this["native"]().canGoForward;
  };

  WebPage.prototype.normalizeURL = function(url) {
    var parser;
    parser = document.createElement('a');
    parser.href = url;
    return parser.href;
  };

  WebPage.prototype.clearMemoryCache = function() {
    var clearMemoryCache;
    clearMemoryCache = this["native"]().clearMemoryCache;
    if (typeof clearMemoryCache === "function") {
      return clearMemoryCache();
    } else {
      throw new Poltergeist.UnsupportedFeature("clearMemoryCache is supported since PhantomJS 2.0.0");
    }
  };

  WebPage.prototype._checkForAsyncResult = function(command_id, callback) {
    if (this._asyncResults.hasOwnProperty(command_id)) {
      callback(this._asyncResults[command_id]);
      delete this._asyncResults[command_id];
    } else {
      setTimeout((function(_this) {
        return function() {
          return _this._checkForAsyncResult(command_id, callback);
        };
      })(this), 50);
    }
  };

  WebPage.prototype._blockRequest = function(url) {
    var blacklisted, useWhitelist, whitelisted;
    useWhitelist = this.urlWhitelist.length > 0;
    whitelisted = this.urlWhitelist.some(function(whitelisted_regex) {
      return whitelisted_regex.test(url);
    });
    blacklisted = this.urlBlacklist.some(function(blacklisted_regex) {
      return blacklisted_regex.test(url);
    });
    if (useWhitelist && !whitelisted) {
      return true;
    }
    if (blacklisted) {
      return true;
    }
    return false;
  };

  WebPage.prototype._overrideNativeEvaluate = function() {
    return this._native.evaluate = function (func, args) {
        function quoteString(str) {
            var c, i, l = str.length, o = '"';
            for (i = 0; i < l; i += 1) {
                c = str.charAt(i);
                if (c >= ' ') {
                    if (c === '\\' || c === '"') {
                        o += '\\';
                    }
                    o += c;
                } else {
                    switch (c) {
                    case '\b':
                        o += '\\b';
                        break;
                    case '\f':
                        o += '\\f';
                        break;
                    case '\n':
                        o += '\\n';
                        break;
                    case '\r':
                        o += '\\r';
                        break;
                    case '\t':
                        o += '\\t';
                        break;
                    default:
                        c = c.charCodeAt();
                        o += '\\u00' + Math.floor(c / 16).toString(16) +
                            (c % 16).toString(16);
                    }
                }
            }
            return o + '"';
        }

        function detectType(value) {
            var s = typeof value;
            if (s === 'object') {
                if (value) {
                    if (value instanceof Array) {
                        s = 'array';
                    } else if (value instanceof RegExp) {
                        s = 'regexp';
                    } else if (value instanceof Date) {
                        s = 'date';
                    }
                } else {
                    s = 'null';
                }
            }
            return s;
        }

        var str, arg, argType, i, l;
        if (!(func instanceof Function || typeof func === 'string' || func instanceof String)) {
            throw "Wrong use of WebPage#evaluate";
        }
        str = 'function() { return (' + func.toString() + ')(';
        for (i = 1, l = arguments.length; i < l; i++) {
            arg = arguments[i];
            argType = detectType(arg);

            switch (argType) {
            case "object":      //< for type "object"
            case "array":       //< for type "array"
                str += JSON.stringify(arg) + ","
                break;
            case "date":        //< for type "date"
                str += "new Date(" + JSON.stringify(arg) + "),"
                break;
            case "string":      //< for type "string"
                str += quoteString(arg) + ',';
                break;
            default:            // for types: "null", "number", "function", "regexp", "undefined"
                str += arg + ',';
                break;
            }
        }
        str = str.replace(/,$/, '') + '); }';
        return this.evaluateJavaScript(str);
    };;
  };

  return WebPage;

})();