/*
* ExtInfoWindow Class, v1.0
*  Copyright (c) 2007, Joe Monahan (http://www.seejoecode.com)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*       http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This class lets you add an info window to the map which mimics GInfoWindow
* and allows for users to skin it via CSS.  Additionally it has options to
* pull in HTML content from an ajax request, triggered when a user clicks on
* the associated marker.
*/


/**
* Creates a new ExtInfoWindow that will initialize by reading styles from css
*
* @constructor
* @param {GMarker} marker The marker associated with the info window
* @param {String} windowId The DOM Id we will use to reference the info window
* @param {String} html The HTML contents
* @param {Object} opt_opts A contianer for optional arguments:
*    {String} ajaxUrl The Url to hit on the server to request some contents
*    {Number} paddingX The padding size in pixels that the info window will leave on
*                    the left and right sides of the map when panning is involved.
*    {Number} paddingY The padding size in pixels that the info window will leave on
*                    the top and bottom sides of the map when panning is involved.
*    {Number} beakOffset The repositioning offset for when aligning the beak element.
*                    This is used to make sure the beak lines up correcting if the
*                    info window styling containers a border.
*/
function ExtInfoWindow(marker, windowId, html, opt_opts) {
 this.html_ = html;
 this.marker_ = marker;
 this.infoWindowId_ = windowId;

 this.options_ = opt_opts == null ? {} : opt_opts;
 this.ajaxUrl_ = this.options_.ajaxUrl == null ? null : this.options_.ajaxUrl;
 this.callback_ = this.options_.ajaxCallback == null ? null : this.options_.ajaxCallback;

 this.borderSize_ = this.options_.beakOffset == null ? 0 : this.options_.beakOffset;
 this.paddingX_ = this.options_.paddingX == null ? 0 + this.borderSize_ : this.options_.paddingX + this.borderSize_;
 this.paddingY_ = this.options_.paddingY == null ? 0 + this.borderSize_ : this.options_.paddingY + this.borderSize_;

 this.map_ = null;

 this.container_ = document.createElement('div');
 this.container_.style.position = 'relative';
 this.container_.style.display = 'none';

 this.contentDiv_ = document.createElement('div');
 this.contentDiv_.id = this.infoWindowId_ + '_contents';
 this.contentDiv_.innerHTML = this.html_;
 this.contentDiv_.style.display = 'block';
 this.contentDiv_.style.visibility = 'hidden';

 this.wrapperDiv_ = document.createElement('div');
};

//use the GOverlay class
ExtInfoWindow.prototype = new GOverlay();

/**
* Called by GMap2's addOverlay method.  Creates the wrapping div for our info window and adds
* it to the relevant map pane.  Also binds mousedown event to a private function so that they
* are not passed to the underlying map.  Finally, performs ajax request if set up to use ajax
* in the constructor.
* @param {GMap2} map The map that has had this extInfoWindow is added to it.
*/
ExtInfoWindow.prototype.initialize = function(map) {
 this.map_ = map;

 this.defaultStyles = {
   containerWidth: this.map_.getSize().width / 2,
   borderSize: 1
 };

 this.wrapperParts = {
   tl:{t:0, l:0, w:0, h:0, domElement: null},
   t:{t:0, l:0, w:0, h:0, domElement: null},
   tr:{t:0, l:0, w:0, h:0, domElement: null},
   l:{t:0, l:0, w:0, h:0, domElement: null},
   r:{t:0, l:0, w:0, h:0, domElement: null},
   bl:{t:0, l:0, w:0, h:0, domElement: null},
   b:{t:0, l:0, w:0, h:0, domElement: null},
   br:{t:0, l:0, w:0, h:0, domElement: null},
   beak:{t:0, l:0, w:0, h:0, domElement: null},
   close:{t:0, l:0, w:0, h:0, domElement: null}
 };

 for (var i in this.wrapperParts ) {
   var tempElement = document.createElement('div');
   tempElement.id = this.infoWindowId_ + '_' + i;
   tempElement.style.visibility = 'hidden';
   document.body.appendChild(tempElement);
   tempElement = document.getElementById(this.infoWindowId_ + '_' + i);
   var tempWrapperPart = eval('this.wrapperParts.' + i);    
   tempWrapperPart.w = parseInt(this.getStyle_(tempElement, 'width'));
   tempWrapperPart.h = parseInt(this.getStyle_(tempElement, 'height'));
   document.body.removeChild(tempElement);
 }
 for (var i in this.wrapperParts) {
   if (i == 'close' ) {
     //first append the content so the close button is layered above it
     this.wrapperDiv_.appendChild(this.contentDiv_);
   }
   var wrapperPartsDiv = null;
   if (this.wrapperParts[i].domElement == null) {
     wrapperPartsDiv = document.createElement('div');
     this.wrapperDiv_.appendChild(wrapperPartsDiv);
   } else {
     wrapperPartsDiv = this.wrapperParts[i].domElement;
   }
   wrapperPartsDiv.id = this.infoWindowId_ + '_' + i;
   wrapperPartsDiv.style.position = 'absolute';
   wrapperPartsDiv.style.width = this.wrapperParts[i].w + 'px';
   wrapperPartsDiv.style.height = this.wrapperParts[i].h + 'px';
   wrapperPartsDiv.style.top = this.wrapperParts[i].t + 'px';
   wrapperPartsDiv.style.left = this.wrapperParts[i].l + 'px';
   this.wrapperParts[i].domElement = wrapperPartsDiv;
 }
 
 this.map_.getPane(G_MAP_FLOAT_PANE).appendChild(this.container_);
 this.container_.id = this.infoWindowId_;
 var containerWidth  = this.getStyle_(document.getElementById(this.infoWindowId_), 'width');
 this.container_.style.width = (containerWidth == null ? this.defaultStyles.containerWidth : containerWidth);

 this.map_.getContainer().appendChild(this.contentDiv_);
 this.contentWidth = this.getDimensions_(this.container_).width;
 this.contentDiv_.style.width = this.contentWidth + 'px';
 this.contentDiv_.style.position = 'absolute';

 this.container_.appendChild(this.wrapperDiv_);

 GEvent.bindDom(this.container_, 'mousedown', this,this.onClick_);
 GEvent.bindDom(this.container_, 'dblclick', this,this.onClick_);
 GEvent.bindDom(this.container_, 'DOMMouseScroll', this, this.onClick_);
 

 GEvent.trigger(this.map_, 'extinfowindowopen');
 if (this.ajaxUrl_ != null ) {
   this.ajaxRequest_(this.ajaxUrl_);
 }
};

/**
* Private function to steal mouse click events to prevent it from returning to the map.
* Without this links in the ExtInfoWindow would not work, and you could click to zoom or drag
* the map behind it.
* @private
* @param {MouseEvent} e The mouse event caught by this function
*/
ExtInfoWindow.prototype.onClick_ = function(e) {
 if(navigator.userAgent.toLowerCase().indexOf('msie') != -1 && document.all) {
   window.event.cancelBubble = true;
   window.event.returnValue = false;
 } else {
   //e.preventDefault();
   e.stopPropagation();
 }
};

/**
* Remove the extInfoWindow container from the map pane.
*/
ExtInfoWindow.prototype.remove = function() {
 if (this.map_.getExtInfoWindow() != null) {
   GEvent.trigger(this.map_, 'extinfowindowbeforeclose');
   
   GEvent.clearInstanceListeners(this.container_);
   if (this.container_.outerHTML) {
     this.container_.outerHTML = ''; //prevent pseudo-leak in IE
   }
   if (this.container_.parentNode) {
     this.container_.parentNode.removeChild(this.container_);
   }
   this.container_ = null;
   GEvent.trigger(this.map_, 'extinfowindowclose');
   this.map_.setExtInfoWindow_(null);
 }
};

/**
* Return a copy of this overlay, for the parent Map to duplicate itself in full. This
* is part of the Overlay interface and is used, for example, to copy everything in the
* main view into the mini-map.
* @return {GOverlay}
*/
ExtInfoWindow.prototype.copy = function() {
 return new ExtInfoWindow(this.marker_, this.infoWindowId_, this.html_, this.options_);
};


/**
* Draw extInfoWindow and wrapping decorators onto the map.  Resize and reposition
* the map as necessary.
* @param {Boolean} force Will be true when pixel coordinates need to be recomputed.
*/
ExtInfoWindow.prototype.redraw = function(force) {
 if (!force || this.container_ == null) return;

 //set the content section's height, needed so  browser font resizing does not affect the window's dimensions
 var contentHeight = this.contentDiv_.offsetHeight;
 this.contentDiv_.style.height = contentHeight + 'px';

 //reposition contents depending on wrapper parts.
 //this is necessary for content that is pulled in via ajax
 this.contentDiv_.style.left = this.wrapperParts.l.w + 'px';
 this.contentDiv_.style.top = this.wrapperParts.tl.h + 'px';
 this.contentDiv_.style.visibility = 'visible';

 //Finish configuring wrapper parts that were not set in initialization
 this.wrapperParts.tl.t = 0;
 this.wrapperParts.tl.l = 0;
 this.wrapperParts.t.l = this.wrapperParts.tl.w;
 this.wrapperParts.t.w = (this.wrapperParts.l.w + this.contentWidth + this.wrapperParts.r.w) - this.wrapperParts.tl.w - this.wrapperParts.tr.w;
 this.wrapperParts.t.h = this.wrapperParts.tl.h;
 this.wrapperParts.tr.l = this.wrapperParts.t.w + this.wrapperParts.tl.w;
 this.wrapperParts.l.t = this.wrapperParts.tl.h;
 this.wrapperParts.l.h = contentHeight;
 this.wrapperParts.r.l = this.contentWidth + this.wrapperParts.l.w;
 this.wrapperParts.r.t = this.wrapperParts.tr.h;
 this.wrapperParts.r.h = contentHeight;
 this.wrapperParts.bl.t = contentHeight + this.wrapperParts.tl.h;
 this.wrapperParts.b.l = this.wrapperParts.bl.w;
 this.wrapperParts.b.t = contentHeight + this.wrapperParts.tl.h;
 this.wrapperParts.b.w = (this.wrapperParts.l.w + this.contentWidth + this.wrapperParts.r.w) - this.wrapperParts.bl.w - this.wrapperParts.br.w;
 this.wrapperParts.b.h = this.wrapperParts.bl.h;
 this.wrapperParts.br.l = this.wrapperParts.b.w + this.wrapperParts.bl.w;
 this.wrapperParts.br.t = contentHeight + this.wrapperParts.tr.h;
 this.wrapperParts.close.l = this.wrapperParts.tr.l +this.wrapperParts.tr.w - this.wrapperParts.close.w - this.borderSize_;
 this.wrapperParts.close.t = this.borderSize_;
 this.wrapperParts.beak.l = this.borderSize_ + (this.contentWidth / 2) - (this.wrapperParts.beak.w / 2);
 this.wrapperParts.beak.t = this.wrapperParts.bl.t + this.wrapperParts.bl.h - this.borderSize_;

 //create the decoration wrapper DOM objects
 //append the styled info window to the container
 for (var i in this.wrapperParts) {
   if (i == 'close' ) {
     //first append the content so the close button is layered above it
     this.wrapperDiv_.insertBefore(this.contentDiv_, this.wrapperParts[i].domElement);
   }
   var wrapperPartsDiv = null;
   if (this.wrapperParts[i].domElement == null) {
     wrapperPartsDiv = document.createElement('div');
     this.wrapperDiv_.appendChild(wrapperPartsDiv);
   } else {
     wrapperPartsDiv = this.wrapperParts[i].domElement;
   }
   wrapperPartsDiv.id = this.infoWindowId_ + '_' + i;
   wrapperPartsDiv.style.position='absolute';
   wrapperPartsDiv.style.width = this.wrapperParts[i].w + 'px';
   wrapperPartsDiv.style.height = this.wrapperParts[i].h + 'px';
   wrapperPartsDiv.style.top = this.wrapperParts[i].t + 'px';
   wrapperPartsDiv.style.left = this.wrapperParts[i].l + 'px';
   this.wrapperParts[i].domElement = wrapperPartsDiv;
 }

 //add event handler for the close box
 var currentMarker = this.marker_;
 var thisMap = this.map_;
 GEvent.addDomListener(this.wrapperParts.close.domElement, 'click',
   function() {
     thisMap.closeExtInfoWindow();
   }
 );

 //position the container on the map, over the marker
 var pixelLocation = this.map_.fromLatLngToDivPixel(this.marker_.getPoint());
 this.container_.style.position = 'absolute';
 var markerIcon = this.marker_.getIcon();
 this.container_.style.left = (pixelLocation.x
   - (this.contentWidth / 2)
   - markerIcon.iconAnchor.x
   + markerIcon.infoWindowAnchor.x
 ) + 'px';

 this.container_.style.top = (pixelLocation.y
   - this.wrapperParts.bl.h
   - contentHeight
   - this.wrapperParts.tl.h
   - this.wrapperParts.beak.h
   - markerIcon.iconAnchor.y
   + markerIcon.infoWindowAnchor.y
   + this.borderSize_
 ) + 'px';

 this.container_.style.display = 'block';

 if(this.map_.getExtInfoWindow() != null) {
   this.repositionMap_();
 }
};

/**
* Determine the dimensions of the contents to recalculate and reposition the
* wrapping decorator elements accordingly.
*/
ExtInfoWindow.prototype.resize = function(){
 
 //Create temporary DOM node for new contents to get new height
 //This is done because if you manipulate this.contentDiv_ directly it causes visual errors in IE6
 var tempElement = this.contentDiv_.cloneNode(true);
 tempElement.id = this.infoWindowId_ + '_tempContents';
 tempElement.style.visibility = 'hidden';      
 tempElement.style.height = 'auto';
 document.body.appendChild(tempElement);
 tempElement = document.getElementById(this.infoWindowId_ + '_tempContents');
 var contentHeight = tempElement.offsetHeight;
 document.body.removeChild(tempElement);

 //Set the new height to eliminate visual defects that can be caused by font resizing in browser
 this.contentDiv_.style.height = contentHeight + 'px';

 var contentWidth = this.contentDiv_.offsetWidth;
 var pixelLocation = this.map_.fromLatLngToDivPixel(this.marker_.getPoint());

 var oldWindowHeight = this.wrapperParts.t.domElement.offsetHeight + this.wrapperParts.l.domElement.offsetHeight + this.wrapperParts.b.domElement.offsetHeight;        
 var oldWindowPosTop = this.wrapperParts.t.domElement.offsetTop;

 //resize info window to look correct for new height
 this.wrapperParts.l.domElement.style.height = contentHeight + 'px';
 this.wrapperParts.r.domElement.style.height = contentHeight + 'px';
 var newPosTop = this.wrapperParts.b.domElement.offsetTop - contentHeight;
 this.wrapperParts.l.domElement.style.top = newPosTop + 'px';
 this.wrapperParts.r.domElement.style.top = newPosTop + 'px';
 this.contentDiv_.style.top = newPosTop + 'px';
 windowTHeight = parseInt(this.wrapperParts.t.domElement.style.height);
 newPosTop -= windowTHeight;
 this.wrapperParts.close.domElement.style.top = newPosTop + this.borderSize_ + 'px';
 this.wrapperParts.tl.domElement.style.top = newPosTop + 'px';
 this.wrapperParts.t.domElement.style.top = newPosTop + 'px';
 this.wrapperParts.tr.domElement.style.top = newPosTop + 'px';

 this.repositionMap_();
};

/**
* Check to see if the displayed extInfoWindow is positioned off the viewable
* map region and by how much.  Use that information to pan the map so that
* the extInfoWindow is completely displayed.
* @private
*/
ExtInfoWindow.prototype.repositionMap_ = function(){
 //pan if necessary so it shows on the screen
 var mapNE = this.map_.fromLatLngToDivPixel(
   this.map_.getBounds().getNorthEast()
 );
 var mapSW = this.map_.fromLatLngToDivPixel(
   this.map_.getBounds().getSouthWest()
 );
 var markerPosition = this.map_.fromLatLngToDivPixel(
   this.marker_.getPoint()
 );

 var panX = 0;
 var panY = 0;
 var paddingX = this.paddingX_;
 var paddingY = this.paddingY_;
 var infoWindowAnchor = this.marker_.getIcon().infoWindowAnchor;
 var iconAnchor = this.marker_.getIcon().iconAnchor;

 //test top of screen  
 var windowT = this.wrapperParts.t.domElement;
 var windowL = this.wrapperParts.l.domElement;
 var windowB = this.wrapperParts.b.domElement;
 var windowR = this.wrapperParts.r.domElement;
 var windowBeak = this.wrapperParts.beak.domElement;

 var offsetTop = markerPosition.y - ( -infoWindowAnchor.y + iconAnchor.y +  this.getDimensions_(windowBeak).height + this.getDimensions_(windowB).height + this.getDimensions_(windowL).height + this.getDimensions_(windowT).height + this.paddingY_);
 if (offsetTop < mapNE.y) {
   panY = mapNE.y - offsetTop;
 } else {
   //test bottom of screen
   var offsetBottom = markerPosition.y + this.paddingY_;
   if (offsetBottom >= mapSW.y) {
     panY = -(offsetBottom - mapSW.y);
   }
 }

 //test right of screen
 var offsetRight = Math.round(markerPosition.x + this.getDimensions_(this.container_).width/1 + this.getDimensions_(windowR).width + this.paddingX_ + infoWindowAnchor.x - iconAnchor.x);
 if (offsetRight > mapNE.x) {
   panX = -( offsetRight - mapNE.x);
 } else {
   //test left of screen
   var offsetLeft = - (Math.round( (this.getDimensions_(this.container_).width/1 - this.marker_.getIcon().iconSize.width/1) + this.getDimensions_(windowL).width + this.borderSize_ + this.paddingX_) - markerPosition.x - infoWindowAnchor.x + iconAnchor.x);
   if( offsetLeft < mapSW.x) {
     panX = mapSW.x - offsetLeft;
   }
 }

 if (panX != 0 || panY != 0 && this.map_.getExtInfoWindow() != null ) {
   this.map_.panBy(new GSize(panX,panY));
 }
};


/**
* Private function that handles performing an ajax request to the server.  The response
* information is assumed to be HTML and is placed inside this extInfoWindow's contents region.
* Last, check to see if the height has changed, and resize the extInfoWindow accordingly.
* @private
* @param {String} url The Url of where to make the ajax request on the server
*/
ExtInfoWindow.prototype.ajaxRequest_ = function(url){
 var thisMap = this.map_;
 var thisCallback = this.callback_;
 GDownloadUrl(url, function(response, status){
   var infoWindow = document.getElementById(thisMap.getExtInfoWindow().infoWindowId_ + '_contents');
   if (response == null || status == -1 ) {
     infoWindow.innerHTML = '<span class="error">ERROR: The Ajax request failed to get HTML content from "' + url + '"</span>';
   } else {
     infoWindow.innerHTML = response;
   }
   if (thisCallback != null ) {
     thisCallback();
   }
   thisMap.getExtInfoWindow().resize();
   GEvent.trigger(thisMap, 'extinfowindowupdate');
 });
};

/**
* Private function derived from Prototype.js to get a given element's
* height and width
* @private
* @param {Object} element The DOM element that will have height and
*                    width will be calculated for it.
* @return {Object} Object with keys: width, height
*/
ExtInfoWindow.prototype.getDimensions_ = function(element) {
 var display = this.getStyle_(element, 'display');
 if (display != 'none' && display != null) { // Safari bug
   return {width: element.offsetWidth, height: element.offsetHeight};
 }

 // All *Width and *Height properties give 0 on elements with display none,
 // so enable the element temporarily
 var els = element.style;
 var originalVisibility = els.visibility;
 var originalPosition = els.position;
 var originalDisplay = els.display;
 els.visibility = 'hidden';
 els.position = 'absolute';
 els.display = 'block';
 var originalWidth = element.clientWidth;
 var originalHeight = element.clientHeight;
 els.display = originalDisplay;
 els.position = originalPosition;
 els.visibility = originalVisibility;
 return {width: originalWidth, height: originalHeight};
};

/**
* Private function derived from Prototype.js to get a given element's
* value that is associated with the passed style
* @private
* @param {Object} element The DOM element that will be checked.
* @param {String} style The style name that will be have it's value returned.
* @return {Object}
*/
ExtInfoWindow.prototype.getStyle_ = function(element, style) {
 var found = false;
 style = this.camelize_(style);
 var value = element.style[style];
 if (!value) {
   if (document.defaultView && document.defaultView.getComputedStyle) {
     var css = document.defaultView.getComputedStyle(element, null);
     value = css ? css[style] : null;
   } else if (element.currentStyle) {
     value = element.currentStyle[style];
   }
 }
 if((value == 'auto') && (style == 'width' || style == 'height') && (this.getStyle_(element, 'display') != 'none')) {
   if( style == 'width' ) {
     value = element.offsetWidth;
   }else {
     value = element.offsetHeight;
   }
 }
 return (value == 'auto') ? null : value;
};

/**
* Private function pulled from Prototype.js that will change a hyphened
* style name into camel case.
* @private
* @param {String} element The string that will be parsed and made into camel case
* @return {String}
*/
ExtInfoWindow.prototype.camelize_ = function(element) {
 var parts = element.split('-'), len = parts.length;
 if (len == 1) return parts[0];
 var camelized = element.charAt(0) == '-'
   ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
   : parts[0];

 for (var i = 1; i < len; i++) {
   camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);
 }
 return camelized;
};

GMap.prototype.ExtInfoWindowInstance_ = null;
GMap.prototype.ClickListener_ = null;
GMap.prototype.InfoWindowListener_ = null;

/**
* Creates a new instance of ExtInfoWindow for the GMarker.  Register the newly created
* instance with the map, ensuring only one window is open at a time. If this is the first
* ExtInfoWindow ever opened, add event listeners to the map to close the ExtInfoWindow on
* zoom and click, to mimic the default GInfoWindow behavior.
*
* @param {GMap} map The GMap2 object where the ExtInfoWindow will open
* @param {String} cssId The id we will use to reference the info window
* @param {String} html The HTML contents
* @param {Object} opt_opts A contianer for optional arguments:
*    {String} ajaxUrl The Url to hit on the server to request some contents
*    {Number} paddingX The padding size in pixels that the info window will leave on
*                    the left and right sides of the map when panning is involved.
*    {Number} paddingX The padding size in pixels that the info window will leave on
*                    the top and bottom sides of the map when panning is involved.
*    {Number} beakOffset The repositioning offset for when aligning the beak element.
*                    This is used to make sure the beak lines up correcting if the
*                    info window styling containers a border.
*/
GMarker.prototype.openExtInfoWindow = function(map, cssId, html, opt_opts) {
 if (map == null) {
   throw 'Error in GMarker.openExtInfoWindow: map cannot be null';
   return false;
 }
 if (cssId == null || cssId == '') {
   throw 'Error in GMarker.openExtInfoWindow: must specify a cssId';
   return false;
 }
 
 map.closeInfoWindow();
 if (map.getExtInfoWindow() != null) {
   map.closeExtInfoWindow();
 }
 if (map.getExtInfoWindow() == null) {
   map.setExtInfoWindow_( new ExtInfoWindow(
     this,
     cssId,
     html,
     opt_opts
   ) );
   if (map.ClickListener_ == null) {
     //listen for map click, close ExtInfoWindow if open
     map.ClickListener_ = GEvent.addListener(map, 'click',
     function(event) {
         if( !event && map.getExtInfoWindow() != null ){
           map.closeExtInfoWindow();
         }
       }
     );
   }
   if (map.InfoWindowListener_ == null) {
     //listen for default info window open, close ExtInfoWindow if open
     map.InfoWindowListener_ = GEvent.addListener(map, 'infowindowopen',
     function(event) {
         if (map.getExtInfoWindow() != null) {
           map.closeExtInfoWindow();
         }
       }
     );
   }
   map.addOverlay(map.getExtInfoWindow());
 }
};

/**
* Remove the ExtInfoWindow instance
* @param {GMap2} map The map where the GMarker and ExtInfoWindow exist
*/
GMarker.prototype.closeExtInfoWindow = function(map) {
 if( map.getExtInfWindow() != null ){
   map.closeExtInfoWindow();
 }
};

/**
* Get the ExtInfoWindow instance from the map
*/
GMap2.prototype.getExtInfoWindow = function(){
 return this.ExtInfoWindowInstance_;
};
/**
* Set the ExtInfoWindow instance for the map
* @private
*/
GMap2.prototype.setExtInfoWindow_ = function( extInfoWindow ){
 this.ExtInfoWindowInstance_ = extInfoWindow;
}
/**
* Remove the ExtInfoWindow from the map
*/
GMap2.prototype.closeExtInfoWindow = function(){
 if( this.getExtInfoWindow() != null ){
   this.ExtInfoWindowInstance_.remove();
 }
};