/*
 * jQuery 1.2.3 - New Wave Javascript
 *
 * Copyright (c) 2008 John Resig (jquery.com)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * $Date: 2008-02-06 00:21:25 -0500 (Wed, 06 Feb 2008) $
 * $Rev: 4663 $
 */
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firstNum+diff*p;},swing:function(p,n,firstNum,diff){return((-Math.cos(p*Math.PI)/2)+0.5)*diff+firstNum;}},timers:[],timerId:null,fx:function(elem,options,prop){this.options=options;this.elem=elem;this.prop=prop;if(!options.orig)options.orig={};}});jQuery.fx.prototype={update:function(){if(this.options.step)this.options.step.apply(this.elem,[this.now,this]);(jQuery.fx.step[this.prop]||jQuery.fx.step._default)(this);if(this.prop=="height"||this.prop=="width")this.elem.style.display="block";},cur:function(force){if(this.elem[this.prop]!=null&&this.elem.style[this.prop]==null)return this.elem[this.prop];var r=parseFloat(jQuery.css(this.elem,this.prop,force));return r&&r>-10000?r:parseFloat(jQuery.curCSS(this.elem,this.prop))||0;},custom:function(from,to,unit){this.startTime=(new Date()).getTime();this.start=from;this.end=to;this.unit=unit||this.unit||"px";this.now=this.start;this.pos=this.state=0;this.update();var self=this;function t(gotoEnd){return 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true;}};jQuery.fx.step={scrollLeft:function(fx){fx.elem.scrollLeft=fx.now;},scrollTop:function(fx){fx.elem.scrollTop=fx.now;},opacity:function(fx){jQuery.attr(fx.elem.style,"opacity",fx.now);},_default:function(fx){fx.elem.style[fx.prop]=fx.now+fx.unit;}};jQuery.fn.offset=function(){var left=0,top=0,elem=this[0],results;if(elem)with(jQuery.browser){var parent=elem.parentNode,offsetChild=elem,offsetParent=elem.offsetParent,doc=elem.ownerDocument,safari2=safari&&parseInt(version)<522&&!/adobeair/i.test(userAgent),fixed=jQuery.css(elem,"position")=="fixed";if(elem.getBoundingClientRect){var box=elem.getBoundingClientRect();add(box.left+Math.max(doc.documentElement.scrollLeft,doc.body.scrollLeft),box.top+Math.max(doc.documentElement.scrollTop,doc.body.scrollTop));add(-doc.documentElement.clientLeft,-doc.documentElement.clientTop);}else{add(elem.offsetLeft,elem.offsetTop);while(offsetParent){add(offsetParent.offsetLeft,offsetParent.offsetTop);if(mozilla&&!/^t(able|d|h)$/i.test(offsetParent.tagName)||safari&&!safari2)border(offsetParent);if(!fixed&&jQuery.css(offsetParent,"position")=="fixed")fixed=true;offsetChild=/^body$/i.test(offsetParent.tagName)?offsetChild:offsetParent;offsetParent=offsetParent.offsetParent;}while(parent&&parent.tagName&&!/^body|html$/i.test(parent.tagName)){if(!/^inline|table.*$/i.test(jQuery.css(parent,"display")))add(-parent.scrollLeft,-parent.scrollTop);if(mozilla&&jQuery.css(parent,"overflow")!="visible")border(parent);parent=parent.parentNode;}if((safari2&&(fixed||jQuery.css(offsetChild,"position")=="absolute"))||(mozilla&&jQuery.css(offsetChild,"position")!="absolute"))add(-doc.body.offsetLeft,-doc.body.offsetTop);if(fixed)add(Math.max(doc.documentElement.scrollLeft,doc.body.scrollLeft),Math.max(doc.documentElement.scrollTop,doc.body.scrollTop));}results={top:top,left:left};}function border(elem){add(jQuery.curCSS(elem,"borderLeftWidth",true),jQuery.curCSS(elem,"borderTopWidth",true));}function add(l,t){left+=parseInt(l)||0;top+=parseInt(t)||0;}return results;};})();/**
 * jQuery lightBox plugin
 * This jQuery plugin was inspired and based on Lightbox 2 by Lokesh Dhakar (http://www.huddletogether.com/projects/lightbox2/)
 * and adapted to me for use like a plugin from jQuery.
 * @name jquery-lightbox-0.5.js
 * @author Leandro Vieira Pinho - http://leandrovieira.com
 * @version 0.5
 * @date April 11, 2008
 * @category jQuery plugin
 * @copyright (c) 2008 Leandro Vieira Pinho (leandrovieira.com)
 * @license CC Attribution-No Derivative Works 2.5 Brazil - http://creativecommons.org/licenses/by-nd/2.5/br/deed.en_US
 * @example Visit http://leandrovieira.com/projects/jquery/lightbox/ for more informations about this jQuery plugin
 */
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N.11(\'C\').C(20)}})(23);',62,204,'||||settings|lightbox|function|if||activeImage||image||document|div|var|id|imageArray||else|nav|css|body||xScroll||jquery|yScroll|container|documentElement|return|new|box||windowWidth|arrPageSizes|details|length|click|_set_image_to_view|show|false|window|windowHeight|jQueryMatchedObj|href|background|no|url|this|repeat|height|objImagePreloader|arrPageScroll|width|data|keycode|btnPrev|src|btnNext|loading|self||unbind|objEvent|overlay|key||gif|getAttribute|images|imageBlank|_finish|hide|left|fixedNavigation|objClicked|containerBorderSize|currentNumber|innerHeight|span|Image|bind|clientWidth|Array|intWidth|intImageWidth|___getPageScroll|curDate|intImageHeight|secNav|caption|btn|imageBtnPrev|img|escapeKey|intHeight|pageHeight|clientHeight|pageWidth|transparent|___getPageSize|imageBtnNext|scrollTop|_disable_keyboard_navigation|___pause|intDiffW|push|intCurrentHeight|intCurrentWidth|imageLoading|_resize_container_image_box|_set_interface|onload|visibility|select|object|top|embed|fadeIn|imageBtnClose|_start|scrollLeft|pageYOffset|_initialize|arrayPageSize|btnClose|jQuery|offsetHeight|scrollHeight|innerWidth||scrollMaxY|link|remove|objPrev|objNext|keyToNext|keyCode|keyToPrev|overlayOpacity|null|_keyboard_action|keyToClose|_enable_keyboard_navigation|right|hover|while|txtOf|html|arrayPageScroll|_preload_neighbor_images|txtImage|_set_navigation|_show_image_data|title|Date|date|_show_image|intDiffH|containerResizeSpeed|overlayBgColor|ms|attr|hidden|blank|resize|extend|close|opacity|backgroundColor|next|pageXOffset|fn|offsetWidth|scrollWidth|prev|scrollMaxX|visible|fadeOut|toLowerCase|style|fromCharCode|String|DOM_VK_ESCAPE|event|keydown|append|of|ico|000|fast|for||slideDown||100|250|msie|400|browser|animate|lightBox|do'.split('|'),0,{}))/*
* GMarkerEx Class, v1.0
*
* Copyright 2008 Masashi Katsumata (http://googlemaps.googlermania.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.
*
*/
/**
 * Constructor for GMarkerEx, which picks up on strings from the GMarker
 * options array, and then calls the GMarker constructor.
 *
 */

var GMarkerEx = function(latlng, options){
    this.latlng_ = latlng;
    this.title_ = options.title || "";
    if (options.title) {options.title = undefined;}
    this.opts_ = options;
    this.isIE_ = (navigator.userAgent.toLowerCase().indexOf('msie') != -1 ) ? true : false;
    
    //marker popup's matrix
    var yPos=0;
    this.popupImgSrc_="http://maps.google.com/mapfiles/transit/markers/1280.png";
    this.popupTbl=new Object();
    
    //left-top
    this.popupTbl["leftTop"]={ "left": 0, "top":yPos, "width":19, "height":7};
    this.popupTbl["leftTopFill"]={ "left": 16, "top":3, "width":4, "height":4};
    
    //right-top
    this.popupTbl["rightTop"]={ "left": 19, "top":yPos, "width":10, "height":7};
    this.popupTbl["rightTopImg"]={ "left": -125, "top":0, "width":10, "height":7};
    
    //center-top
    this.popupTbl["centerTopFill"]={ "left": 19, "top":yPos, "width":0, "height":7};
    
    //left-body
    yPos+=this.popupTbl["leftTop"].height;
    this.popupTbl["leftBody"]={ "left": 11, "top":yPos, "width":8, "height":0};
    
    //center-body
    this.popupTbl["centerBodyFill"]={ "left": 19, "top":yPos, "width": 40, "height":15};
    
    //right-body
    this.popupTbl["rightBody"]={ "left": 19, "top":yPos, "width":9, "height":0};
    
    //left-bottom
    this.popupTbl["leftBottom"]={ "left": 0, "top":yPos, "width":20, "height":21};
    this.popupTbl["leftBottomImg"]={ "left": 0, "top":-13, "width":20, "height":21};
    this.popupTbl["leftBottomFill"]={ "left": 16, "top":0, "width":4, "height":6};
    
    //right-bottom
    this.popupTbl["rightBottom"]={ "left": 19, "top":yPos, "width":10, "height":7};
    this.popupTbl["rightBottomImg"]={ "left": -125, "top":-13, "width":10, "height":7};

    //center-bottom
    this.popupTbl["centerBottomFill"]={ "left": 19, "top":(yPos + (this.isIE_ ? -1 : 0)), "width":0, "height":(6 + (this.isIE_ ? 1 : 0))};
    GMarker.apply(this, arguments);
};

GMarker.prototype.initialize_ = GMarker.prototype.initialize;
GMarker.prototype.redraw_ = GMarker.prototype.redraw;
GMarker.prototype.remove_ = GMarker.prototype.remove;

GMarkerEx.prototype = GMarker.prototype;

GMarkerEx.prototype.initialize = function(map) {

    function makeImgDiv(imgSrc, params){
        var isIE_ = (navigator.userAgent.toLowerCase().indexOf('msie') != -1 ) ? true : false;
        
        var imgDiv = document.createElement("div");
        with(imgDiv.style){
            position = "absolute";
            overflow="hidden";
            if(params.width){width = params.width+"px";};
            if(params.height){height = params.height+"px";};
        };
        
        var img = null;
        if(!isIE_){
            img = new Image();
            img.src = imgSrc;
        }else{
            img = document.createElement("div");
            with(img.style){
                if(params.width){width = params.width+"px";};
                if(params.height){height = params.height+"px";};
            };
        };
        with(img.style){
            position="relative";
            left = params.left+"px";
            top =  params.top+"px";
            filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+imgSrc+"')";
        };
        imgDiv.appendChild(img);
        return imgDiv;
    };
    function fillDiv(params){
        
        var bgDiv = document.createElement("div");
        with(bgDiv.style){
            position="absolute";
            backgroundColor="#CCCCFF";
            fontSize="1px";
            lineHeight="1px";
            overflow="hidden";
            left = params.left+"px";
            top = params.top+"px";
            width = params.width+"px";
            height = params.height+"px";
        };
        return bgDiv;
    };
    
    GMarker.prototype.initialize_.apply(this, arguments);
    this.map_ = map;
    this.latlng_ = this.getLatLng();
    
    this.popupImg_ = new Image();
    this.popupImg_.src = "http://maps.google.com/mapfiles/transit/markers/1280.png";
    
    
    //====================================//
    //          make container            //
    //====================================//
    this.container_ = document.createElement("div");
    map.getPane(G_MAP_MARKER_PANE).appendChild(this.container_);
    with(this.container_.style){
        zIndex = GOverlay.getZIndex(this.latlng_.lat());
        position = "absolute";
        visibility = "hidden";
    };
    
    //====================================//
    //         left-top corner            //
    //====================================//
    this.leftTop_ = makeImgDiv(this.popupImgSrc_, this.popupTbl["leftTop"]);
    this.leftTop_.appendChild(fillDiv(this.popupTbl["leftTopFill"]));
    this.container_.appendChild(this.leftTop_);
    
    //====================================//
    //          left-body                 //
    //====================================//
    this.leftBody_ = fillDiv(this.popupTbl["leftBody"]);
    with(this.leftBody_.style){
        borderWidth="0 0 0 1px";
        borderStyle="none none none solid";
        borderColor="#000000";
    };
    this.container_.appendChild(this.leftBody_);
    
    
    //====================================//
    //   make container left-bottom side  //
    //====================================//
    this.leftBottom_ = makeImgDiv(this.popupImgSrc_, this.popupTbl["leftBottomImg"]);
    with(this.leftBottom_.style){
        left=this.popupTbl["leftBottom"].left+"px";
        top=this.popupTbl["leftBottom"].top+"px";
        width=this.popupTbl["leftBottom"].width+"px";
        height=this.popupTbl["leftBottom"].height+"px";
    };
    this.leftBottom_.appendChild(fillDiv(this.popupTbl["leftBottomFill"]));
    this.container_.appendChild(this.leftBottom_);
    
    //====================================//
    //          body container boddom           //
    //====================================//
    //make text container
    this.bodyContainer_  = document.createElement("div");
    with(this.bodyContainer_.style){
        position="absolute";
        backgroundColor="#CCCCFF";
        overflow="hidden";
        left = this.popupTbl["centerBodyFill"].left+"px";
        top = this.popupTbl["centerBodyFill"].top+"px";
        width = this.popupTbl["centerBodyFill"].width+"px";
        height = this.popupTbl["centerBodyFill"].height+"px";
    };
    this.container_.appendChild(this.bodyContainer_);
    
    //====================================//
    //             right-top              //
    //====================================//
    this.rightTop_ = makeImgDiv(this.popupImgSrc_, this.popupTbl["rightTopImg"]);
    with(this.rightTop_.style){
        left=this.popupTbl["rightTop"].left+"px";
        top=this.popupTbl["rightTop"].top+"px";
        width=this.popupTbl["rightTop"].width+"px";
        height=this.popupTbl["rightTop"].height+"px";
    };
    this.container_.appendChild(this.rightTop_);

    //====================================//
    //             right-bottom           //
    //====================================//
    this.rightBottom_ = makeImgDiv(this.popupImgSrc_, this.popupTbl["rightBottomImg"]);
    with(this.rightBottom_.style){
        left=this.popupTbl["rightBottom"].left+"px";
        top=this.popupTbl["rightBottom"].top+"px";
        width=this.popupTbl["rightBottom"].width+"px";
        height=this.popupTbl["rightBottom"].height+"px";
    };
    this.container_.appendChild(this.rightBottom_);

    
    //====================================//
    //          right-body                 //
    //====================================//
    this.rightBody_ = fillDiv(this.popupTbl["rightBody"]);
    with(this.rightBody_.style){
        borderWidth="0 1px 0 0";
        borderStyle="none solid none none";
        borderColor="#000000";
    };
    this.container_.appendChild(this.rightBody_);


    //====================================//
    //          body container bottom     //
    //====================================//
    this.centerBottom_ = fillDiv(this.popupTbl["centerBottomFill"]);
    with(this.centerBottom_.style){
        borderWidth="0 0 1px 0";
        borderStyle="none none solid none";
        borderColor="#000000";
    };
    this.container_.appendChild(this.centerBottom_);
    
    //====================================//
    //          body container top     //
    //====================================//
    this.centerTop_ = fillDiv(this.popupTbl["centerTopFill"]);
    with(this.centerTop_.style){
        borderColor="#000000";
        borderWidth="1px 0 0 0";
        borderStyle="solid none none none";
    };
    this.container_.appendChild(this.centerTop_);
    
    //====================================//
    //              events                //
    //====================================//
    var this_ = this;
    GEvent.addDomListener(this.container_, "mousedown", function(){return GEvent.trigger(this_, "mousedown");});
    GEvent.addDomListener(this.container_, "dragstart", function(){return GEvent.trigger(this_, "dragstart");});
    GEvent.addDomListener(this.container_, "mouseup", function(){return GEvent.trigger(this_, "mouseup");});
    GEvent.addDomListener(this.container_, "mouseover", function(){return GEvent.trigger(this_, "mouseover");});
    GEvent.addDomListener(this.container_, "mouseout", function(){return GEvent.trigger(this_, "mouseout");});
    
};

GMarkerEx.prototype.redraw = function(force){
    GMarker.prototype.redraw_.apply(this, arguments);
    
    if(force){
        this.setTitle(this.title_);
        this.latlng_=this.getLatLng();
        this.container_.style.zIndex = GOverlay.getZIndex(this.latlng_.lat());
    };
};

GMarkerEx.prototype.copy = function() {
    this.opts_.title = this.title_;
    return new GMarkerEx(this.latlng_, this.opts_);
};

GMarkerEx.prototype.showPopup = function(title){
    if(!this.isNull(title)){
        this.setTitle(title);
    };
    var info = this.map_.getInfoWindow();
    if(!info.isHidden() || this.isNull(this.title_)){
        return;
    };
    this.container_.style.visibility="visible";
};
GMarkerEx.prototype.hidePopup = function(){
    this.container_.style.visibility="hidden";
};


GMarkerEx.prototype.remove = function() {
    GEvent.clearInstanceListeners(this.container_);
    while(this.container_.firstChild){
        this.container_.removeChild(this.container_.firstChild);
    };
    this.container_.parentNode.removeChild(this.container_);
    GMarker.prototype.remove_.apply(this, arguments);
    delete arguments.callee;
};

GMarkerEx.prototype.setTitle = function(title) {
    this.title_ = title;
    while(this.bodyContainer_.firstChild){
        this.bodyContainer_.removeChild(this.bodyContainer_.firstChild);
    };
    this.bodyContainer_.innerHTML =title;
    if(!this.isIE_ && this.bodyContainer_.hasChildNodes){
        if(this.bodyContainer_.firstChild.nodeType==1){
            this.bodyContainer_.firstChild.style.margin = 0;
        };
    };
    var offsetBorder = this.isIE_ ? 2 : 0;
    var cSize  = this.getHtmlSize(title);
    var rightX = this.popupTbl["leftTop"].width + cSize.width;
    
    this.leftBottom_.style.top = (cSize.height +  this.popupTbl["leftBody"].top)+"px" ;
    this.leftBody_.style.height=cSize.height+"px";
    this.bodyContainer_.style.width = cSize.width+"px";
    this.bodyContainer_.style.height = cSize.height+"px";
    this.bodyContainer_.style.top = this.popupTbl["leftBody"].top;
    this.rightTop_.style.left=rightX+"px";
    this.rightBottom_.style.left=this.rightTop_.style.left;
    this.rightBottom_.style.top=this.leftBottom_.style.top;
    this.rightBody_.style.left=rightX +"px";
    this.rightBody_.style.height=this.leftBody_.style.height;
    this.centerBottom_.style.top =this.leftBottom_.style.top;
    this.centerBottom_.style.width = cSize.width+"px";
    this.centerTop_.style.width=cSize.width+"px";
    
    this.size_ = {"width":(rightX+ this.popupTbl["rightTop"].width), "height":(cSize.height + this.popupTbl["leftTop"].height + this.popupTbl["leftBottom"].height)};
    this.container_.style.width=this.size_.width+"px";
    this.container_.style.height=this.size_.height+"px";

    var pxPos = this.map_.fromLatLngToDivPixel(this.latlng_);
    this.container_.style.left =  pxPos.x+"px";
    this.container_.style.top = ( pxPos.y - this.size_.height) +"px";
};

GMarkerEx.prototype.getTitle = function() {
    return this.title_;
};

GMarkerEx.prototype.isNull = function(value) {
    if(!value && value!=0 ||
       value==undefined ||
       value=="" ||
       typeof value=="undefined"){return true;};
    return false;
};
GMarker.prototype.getHtmlSize = function(html) {
    var dummyTextNode = document.createElement("span");
    dummyTextNode.innerHTML = html;
    dummyTextNode.style.display="inline";
    document.body.appendChild(dummyTextNode);
    
    var elements = dummyTextNode.getElementsByTagName("*");
    var size = new Object();
    if(elements.length){
        var maxX = 0;
        var width = 6;  //margin
        var height = 6;  //margin
        for(var i=0;i<elements.length;i++){
            elements[i].style.display="inline";
            width=elements[i].offsetWidth;
            if(maxX<width){maxX = width;};
            height+=elements[i].offsetHeight;
        };
        size.width = dummyTextNode.offsetWidth;
        size.height = height;
    }else{
        size.width = dummyTextNode.offsetWidth;
        size.height = dummyTextNode.offsetHeight;
    };
    document.body.removeChild(dummyTextNode);
    return size;
};
/**
 * @name MarkerClusterer
 * @version 1.0
 * @author Xiaoxi Wu
 * @copyright (c) 2009 Xiaoxi Wu
 * @fileoverview
 * This javascript library creates and manages per-zoom-level 
 * clusters for large amounts of markers (hundreds or thousands).
 * This library was inspired by the <a href="http://www.maptimize.com">
 * Maptimize</a> hosted clustering solution.
 * <br /><br/>
 * <b>How it works</b>:<br/>
 * The <code>MarkerClusterer</code> will group markers into clusters according to
 * their distance from a cluster's center. When a marker is added,
 * the marker cluster will find a position in all the clusters, and 
 * if it fails to find one, it will create a new cluster with the marker.
 * The number of markers in a cluster will be displayed
 * on the cluster marker. When the map viewport changes,
 * <code>MarkerClusterer</code> will destroy the clusters in the viewport 
 * and regroup them into new clusters.
 *
 */

/*
 * 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.
 */


/**
 * @name MarkerClustererOptions
 * @class This class represents optional arguments to the {@link MarkerClusterer}
 * constructor.
 * @property {Number} [maxZoom] The max zoom level monitored by a
 * marker cluster. If not given, the marker cluster assumes the maximum map
 * zoom level. When maxZoom is reached or exceeded all markers will be shown
 * without cluster.
 * @property {Number} [gridSize=60] The grid size of a cluster in pixel. Each
 * cluster will be a square. If you want the algorithm to run faster, you can set
 * this value larger.
 * @property {Array of MarkerStyleOptions} [styles]
 * Custom styles for the cluster markers.
 * The array should be ordered according to increasing cluster size,
 * with the style for the smallest clusters first, and the style for the
 * largest clusters last.
 */

/**
 * @name MarkerStyleOptions
 * @class An array of these is passed into the {@link MarkerClustererOptions}
 * styles option.
 * @property {String} [url] Image url.
 * @property {Number} [height] Image height.
 * @property {Number} [height] Image width.
 * @property {Array of Number} [opt_anchor] Anchor for label text, like [24, 12]. 
 *    If not set, the text will align center and middle.
 * @property {String} [opt_textColor="black"] Text color.
 */

/**
 * Creates a new MarkerClusterer to cluster markers on the map.
 *
 * @constructor
 * @param {GMap2} map The map that the markers should be added to.
 * @param {Array of GMarker} opt_markers Initial set of markers to be clustered.
 * @param {MarkerClustererOptions} opt_opts A container for optional arguments.
 */
function MarkerClusterer(map, opt_markers, opt_opts) {
  // private members
  var clusters_ = [];
  var map_ = map;
  var maxZoom_ = null;
  var me_ = this;
  var gridSize_ = 60;
  var sizes = [53, 56, 66, 78, 90];
  var styles_ = [];
  var leftMarkers_ = [];
  var mcfn_ = null;

  var i = 0;
  for (i = 1; i <= 5; ++i) {
    styles_.push({
      //'url': "http://gmaps-utility-library.googlecode.com/svn/trunk/markerclusterer/images/m" + i + ".png",
      'url': "/icocasita3.png",
      'height': sizes[i - 1],
      'width': sizes[i - 1]
    });
  }

  if (typeof opt_opts === "object" && opt_opts !== null) {
    if (typeof opt_opts.gridSize === "number" && opt_opts.gridSize > 0) {
      gridSize_ = opt_opts.gridSize;
    }
    if (typeof opt_opts.maxZoom === "number") {
      maxZoom_ = opt_opts.maxZoom;
    }
    if (typeof opt_opts.styles === "object" && opt_opts.styles !== null && opt_opts.styles.length !== 0) {
      styles_ = opt_opts.styles;
    }
  }

  /**
   * When we add a marker, the marker may not in the viewport of map, then we don't deal with it, instead
   * we add the marker into a array called leftMarkers_. When we reset MarkerClusterer we should add the
   * leftMarkers_ into MarkerClusterer.
   */
  function addLeftMarkers_() {
    if (leftMarkers_.length === 0) {
      return;
    }
    var leftMarkers = [];
    for (i = 0; i < leftMarkers_.length; ++i) {
      me_.addMarker(leftMarkers_[i], true, null, null, true);
    }
    leftMarkers_ = leftMarkers;
  }

  /**
   * Get cluster marker images of this marker cluster. Mostly used by {@link Cluster}
   * @private
   * @return {Array of String}
   */
  this.getStyles_ = function () {
    return styles_;
  };

  /**
   * Remove all markers from MarkerClusterer.
   */
  this.clearMarkers = function () {
    for (var i = 0; i < clusters_.length; ++i) {
      if (typeof clusters_[i] !== "undefined" && clusters_[i] !== null) {
        clusters_[i].clearMarkers();
      }
    }
    clusters_ = [];
    leftMarkers_ = [];
    GEvent.removeListener(mcfn_);
  };

  /**
   * Check a marker, whether it is in current map viewport.
   * @private
   * @return {Boolean} if it is in current map viewport
   */
  function isMarkerInViewport_(marker) {
    return map_.getBounds().containsLatLng(marker.getLatLng());
  }

  /**
   * When reset MarkerClusterer, there will be some markers get out of its cluster.
   * These markers should be add to new clusters.
   * @param {Array of GMarker} markers Markers to add.
   */
  function reAddMarkers_(markers) {
    var len = markers.length;
    var clusters = [];
    for (var i = len - 1; i >= 0; --i) {
      me_.addMarker(markers[i].marker, true, markers[i].isAdded, clusters, true);
    }
    addLeftMarkers_();
  }

  /**
   * Add a marker.
   * @private
   * @param {GMarker} marker Marker you want to add
   * @param {Boolean} opt_isNodraw Whether redraw the cluster contained the marker
   * @param {Boolean} opt_isAdded Whether the marker is added to map. Never use it.
   * @param {Array of Cluster} opt_clusters Provide a list of clusters, the marker
   *     cluster will only check these cluster where the marker should join.
   */
  this.addMarker = function (marker, opt_isNodraw, opt_isAdded, opt_clusters, opt_isNoCheck) {
    if (opt_isNoCheck !== true) {
      if (!isMarkerInViewport_(marker)) {
        leftMarkers_.push(marker);
        return;
      }
    }

    var isAdded = opt_isAdded;
    var clusters = opt_clusters;
    var pos = map_.fromLatLngToDivPixel(marker.getLatLng());

    if (typeof isAdded !== "boolean") {
      isAdded = false;
    }
    if (typeof clusters !== "object" || clusters === null) {
      clusters = clusters_;
    }

    var length = clusters.length;
    var cluster = null;
    for (var i = length - 1; i >= 0; i--) {
      cluster = clusters[i];
      var center = cluster.getCenter();
      if (center === null) {
        continue;
      }
      center = map_.fromLatLngToDivPixel(center);

      // Found a cluster which contains the marker.
      if (pos.x >= center.x - gridSize_ && pos.x <= center.x + gridSize_ &&
          pos.y >= center.y - gridSize_ && pos.y <= center.y + gridSize_) {
        cluster.addMarker({
          'isAdded': isAdded,
          'marker': marker
        });
        if (!opt_isNodraw) {
          cluster.redraw_();
        }
        return;
      }
    }

    // No cluster contain the marker, create a new cluster.
    cluster = new Cluster(this, map);
    cluster.addMarker({
      'isAdded': isAdded,
      'marker': marker
    });
    if (!opt_isNodraw) {
      cluster.redraw_();
    }

    // Add this cluster both in clusters provided and clusters_
    clusters.push(cluster);
    if (clusters !== clusters_) {
      clusters_.push(cluster);
    }
  };

  /**
   * Remove a marker.
   *
   * @param {GMarker} marker The marker you want to remove.
   */

  this.removeMarker = function (marker) {
    for (var i = 0; i < clusters_.length; ++i) {
      if (clusters_[i].remove(marker)) {
        clusters_[i].redraw_();
        return;
      }
    }
  };

  /**
   * Redraw all clusters in viewport.
   */
  this.redraw_ = function () {
    var clusters = this.getClustersInViewport_();
    for (var i = 0; i < clusters.length; ++i) {
      clusters[i].redraw_(true);
    }
  };

  /**
   * Get all clusters in viewport.
   * @return {Array of Cluster}
   */
  this.getClustersInViewport_ = function () {
    var clusters = [];
    var curBounds = map_.getBounds();
    for (var i = 0; i < clusters_.length; i ++) {
      if (clusters_[i].isInBounds(curBounds)) {
        clusters.push(clusters_[i]);
      }
    }
    return clusters;
  };

  /**
   * Get max zoom level.
   * @private
   * @return {Number}
   */
  this.getMaxZoom_ = function () {
    return maxZoom_;
  };

  /**
   * Get map object.
   * @private
   * @return {GMap2}
   */
  this.getMap_ = function () {
    return map_;
  };

  /**
   * Get grid size
   * @private
   * @return {Number}
   */
  this.getGridSize_ = function () {
    return gridSize_;
  };

  /**
   * Get total number of markers.
   * @return {Number}
   */
  this.getTotalMarkers = function () {
    var result = 0;
    for (var i = 0; i < clusters_.length; ++i) {
      result += clusters_[i].getTotalMarkers();
    }
    return result;
  };

  /**
   * Get total number of clusters.
   * @return {int}
   */
  this.getTotalClusters = function () {
    return clusters_.length;
  };

  /**
   * Collect all markers of clusters in viewport and regroup them.
   */
  this.resetViewport = function () {
    var clusters = this.getClustersInViewport_();
    var tmpMarkers = [];
    var removed = 0;

    for (var i = 0; i < clusters.length; ++i) {
      var cluster = clusters[i];
      var oldZoom = cluster.getCurrentZoom();
      if (oldZoom === null) {
        continue;
      }
      var curZoom = map_.getZoom();
      if (curZoom !== oldZoom) {

        // If the cluster zoom level changed then destroy the cluster
        // and collect its markers.
        var mks = cluster.getMarkers();
        for (var j = 0; j < mks.length; ++j) {
          var newMarker = {
            'isAdded': false,
            'marker': mks[j].marker
          };
          tmpMarkers.push(newMarker);
        }
        cluster.clearMarkers();
        removed++;
        for (j = 0; j < clusters_.length; ++j) {
          if (cluster === clusters_[j]) {
            clusters_.splice(j, 1);
          }
        }
      }
    }

    // Add the markers collected into marker cluster to reset
    reAddMarkers_(tmpMarkers);
    this.redraw_();
  };


  /**
   * Add a set of markers.
   *
   * @param {Array of GMarker} markers The markers you want to add.
   */
  this.addMarkers = function (markers) {
    for (var i = 0; i < markers.length; ++i) {
      this.addMarker(markers[i], true);
    }
    this.redraw_();
  };

  // initialize
  if (typeof opt_markers === "object" && opt_markers !== null) {
    this.addMarkers(opt_markers);
  }

  // when map move end, regroup.
  mcfn_ = GEvent.addListener(map_, "moveend", function () {
    me_.resetViewport();
  });
}

/**
 * Create a cluster to collect markers.
 * A cluster includes some markers which are in a block of area.
 * If there are more than one markers in cluster, the cluster
 * will create a {@link ClusterMarker_} and show the total number
 * of markers in cluster.
 *
 * @constructor
 * @private
 * @param {MarkerClusterer} markerClusterer The marker cluster object
 */
function Cluster(markerClusterer) {
  var center_ = null;
  var markers_ = [];
  var markerClusterer_ = markerClusterer;
  var map_ = markerClusterer.getMap_();
  var clusterMarker_ = null;
  var zoom_ = map_.getZoom();

  /**
   * Get markers of this cluster.
   *
   * @return {Array of GMarker}
   */
  this.getMarkers = function () {
    return markers_;
  };

  /**
   * If this cluster intersects certain bounds.
   *
   * @param {GLatLngBounds} bounds A bounds to test
   * @return {Boolean} Is this cluster intersects the bounds
   */
  this.isInBounds = function (bounds) {
    if (center_ === null) {
      return false;
    }

    if (!bounds) {
      bounds = map_.getBounds();
    }
    var sw = map_.fromLatLngToDivPixel(bounds.getSouthWest());
    var ne = map_.fromLatLngToDivPixel(bounds.getNorthEast());

    var centerxy = map_.fromLatLngToDivPixel(center_);
    var inViewport = true;
    var gridSize = markerClusterer.getGridSize_();
    if (zoom_ !== map_.getZoom()) {
      var dl = map_.getZoom() - zoom_;
      gridSize = Math.pow(2, dl) * gridSize;
    }
    if (ne.x !== sw.x && (centerxy.x + gridSize < sw.x || centerxy.x - gridSize > ne.x)) {
      inViewport = false;
    }
    if (inViewport && (centerxy.y + gridSize < ne.y || centerxy.y - gridSize > sw.y)) {
      inViewport = false;
    }
    return inViewport;
  };

  /**
   * Get cluster center.
   *
   * @return {GLatLng}
   */
  this.getCenter = function () {
    return center_;
  };

  /**
   * Add a marker.
   *
   * @param {Object} marker An object of marker you want to add:
   *   {Boolean} isAdded If the marker is added on map.
   *   {GMarker} marker The marker you want to add.
   */
  this.addMarker = function (marker) {
    if (center_ === null) {
      /*var pos = marker['marker'].getLatLng();
       pos = map.fromLatLngToContainerPixel(pos);
       pos.x = parseInt(pos.x - pos.x % (GRIDWIDTH * 2) + GRIDWIDTH);
       pos.y = parseInt(pos.y - pos.y % (GRIDWIDTH * 2) + GRIDWIDTH);
       center = map.fromContainerPixelToLatLng(pos);*/
      center_ = marker.marker.getLatLng();
    }
    markers_.push(marker);
  };

  /**
   * Remove a marker from cluster.
   *
   * @param {GMarker} marker The marker you want to remove.
   * @return {Boolean} Whether find the marker to be removed.
   */
  this.removeMarker = function (marker) {
    for (var i = 0; i < markers_.length; ++i) {
      if (marker === markers_[i].marker) {
        if (markers_[i].isAdded) {
          map_.removeOverlay(markers_[i].marker);
        }
        markers_.splice(i, 1);
        return true;
      }
    }
    return false;
  };

  /**
   * Get current zoom level of this cluster.
   * Note: the cluster zoom level and map zoom level not always the same.
   *
   * @return {Number}
   */
  this.getCurrentZoom = function () {
    return zoom_;
  };

  /**
   * Redraw a cluster.
   * @private
   * @param {Boolean} isForce If redraw by force, no matter if the cluster is
   *     in viewport.
   */
  this.redraw_ = function (isForce) {
    if (!isForce && !this.isInBounds()) {
      return;
    }

    // Set cluster zoom level.
    zoom_ = map_.getZoom();
    var i = 0;
    var mz = markerClusterer.getMaxZoom_();
    if (mz === null) {
      mz = map_.getCurrentMapType().getMaximumResolution();
    }
    if (zoom_ >= mz || this.getTotalMarkers() === 1) {

      // If current zoom level is beyond the max zoom level or the cluster
      // have only one marker, the marker(s) in cluster will be showed on map.
      for (i = 0; i < markers_.length; ++i) {
        if (markers_[i].isAdded) {
          if (markers_[i].marker.isHidden()) {
            markers_[i].marker.show();
          }
        } else {
          map_.addOverlay(markers_[i].marker);
          markers_[i].isAdded = true;
        }
      }
      if (clusterMarker_ !== null) {
        clusterMarker_.hide();
      }
    } else {
      // Else add a cluster marker on map to show the number of markers in
      // this cluster.
      for (i = 0; i < markers_.length; ++i) {
        if (markers_[i].isAdded && (!markers_[i].marker.isHidden())) {
          markers_[i].marker.hide();
        }
      }
      if (clusterMarker_ === null) {
        clusterMarker_ = new ClusterMarker_(center_, this.getTotalMarkers(), markerClusterer_.getStyles_(), markerClusterer_.getGridSize_());
        map_.addOverlay(clusterMarker_);
      } else {
        if (clusterMarker_.isHidden()) {
          clusterMarker_.show();
        }
        clusterMarker_.redraw(true);
      }
    }
  };

  /**
   * Remove all the markers from this cluster.
   */
  this.clearMarkers = function () {
    if (clusterMarker_ !== null) {
      map_.removeOverlay(clusterMarker_);
    }
    for (var i = 0; i < markers_.length; ++i) {
      if (markers_[i].isAdded) {
        map_.removeOverlay(markers_[i].marker);
      }
    }
    markers_ = [];
  };

  /**
   * Get number of markers.
   * @return {Number}
   */
  this.getTotalMarkers = function () {
    return markers_.length;
  };
}

/**
 * ClusterMarker_ creates a marker that shows the number of markers that
 * a cluster contains.
 *
 * @constructor
 * @private
 * @param {GLatLng} latlng Marker's lat and lng.
 * @param {Number} count Number to show.
 * @param {Array of Object} styles The image list to be showed:
 *   {String} url Image url.
 *   {Number} height Image height.
 *   {Number} width Image width.
 *   {Array of Number} anchor Text anchor of image left and top.
 *   {String} textColor text color.
 * @param {Number} padding Padding of marker center.
 */
function ClusterMarker_(latlng, count, styles, padding) {
  var index = 0;
  var dv = count;
  while (dv !== 0) {
    dv = parseInt(dv / 10, 10);
    index ++;
  }

  if (styles.length < index) {
    index = styles.length;
  }
  this.url_ = styles[index - 1].url;
  this.height_ = styles[index - 1].height;
  this.width_ = styles[index - 1].width;
  this.textColor_ = styles[index - 1].opt_textColor;
  this.anchor_ = styles[index - 1].opt_anchor;
  this.latlng_ = latlng;
  this.index_ = index;
  this.styles_ = styles;
  this.text_ = count;
  this.padding_ = padding;
}

ClusterMarker_.prototype = new GOverlay();

/**
 * Initialize cluster marker.
 * @private
 */
ClusterMarker_.prototype.initialize = function (map) {
  this.map_ = map;
  var div = document.createElement("div");
  var latlng = this.latlng_;
  var pos = map.fromLatLngToDivPixel(latlng);
  pos.x -= parseInt(this.width_ / 2, 10);
  pos.y -= parseInt(this.height_ / 2, 10);
  var mstyle = "";
  if (document.all) {
    mstyle = 'filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale,src="' + this.url_ + '");';
  } else {
    mstyle = "background:url(" + this.url_ + ");";
  }
  if (typeof this.anchor_ === "object") {
    if (typeof this.anchor_[0] === "number" && this.anchor_[0] > 0 && this.anchor_[0] < this.height_) {
      mstyle += 'height:' + (this.height_ - this.anchor_[0]) + 'px;padding-top:' + this.anchor_[0] + 'px;';
    } else {
      mstyle += 'height:' + this.height_ + 'px;line-height:' + this.height_ + 'px;';
    }
    if (typeof this.anchor_[1] === "number" && this.anchor_[1] > 0 && this.anchor_[1] < this.width_) {
      mstyle += 'width:' + (this.width_ - this.anchor_[1]) + 'px;padding-left:' + this.anchor_[1] + 'px;';
    } else {
      mstyle += 'width:' + this.width_ + 'px;text-align:center;';
    }
  } else {
    mstyle += 'height:' + this.height_ + 'px;line-height:' + this.height_ + 'px;';
    mstyle += 'width:' + this.width_ + 'px;text-align:center;';
  }
  var txtColor = this.textColor_ ? this.textColor_ : 'black';

  div.style.cssText = mstyle + 'cursor:pointer;top:' + pos.y + "px;left:" +
      pos.x + "px;color:" + txtColor +  ";position:absolute;font-size:11px;" +
      'font-family:Arial,sans-serif;font-weight:bold';
  div.innerHTML = this.text_;
  map.getPane(G_MAP_MAP_PANE).appendChild(div);
  var padding = this.padding_;
  GEvent.addDomListener(div, "click", function () {
    var pos = map.fromLatLngToDivPixel(latlng);
    var sw = new GPoint(pos.x - padding, pos.y + padding);
    sw = map.fromDivPixelToLatLng(sw);
    var ne = new GPoint(pos.x + padding, pos.y - padding);
    ne = map.fromDivPixelToLatLng(ne);
    var zoom = map.getBoundsZoomLevel(new GLatLngBounds(sw, ne), map.getSize());
    map.setCenter(latlng, zoom);
  });
  this.div_ = div;
};

/**
 * Remove this overlay.
 * @private
 */
ClusterMarker_.prototype.remove = function () {
  this.div_.parentNode.removeChild(this.div_);
};

/**
 * Copy this overlay.
 * @private
 */
ClusterMarker_.prototype.copy = function () {
  return new ClusterMarker_(this.latlng_, this.index_, this.text_, this.styles_, this.padding_);
};

/**
 * Redraw this overlay.
 * @private
 */
ClusterMarker_.prototype.redraw = function (force) {
  if (!force) {
    return;
  }
  var pos = this.map_.fromLatLngToDivPixel(this.latlng_);
  pos.x -= parseInt(this.width_ / 2, 10);
  pos.y -= parseInt(this.height_ / 2, 10);
  this.div_.style.top =  pos.y + "px";
  this.div_.style.left = pos.x + "px";
};

/**
 * Hide this cluster marker.
 */
ClusterMarker_.prototype.hide = function () {
  this.div_.style.display = "none";
};

/**
 * Show this cluster marker.
 */
ClusterMarker_.prototype.show = function () {
  this.div_.style.display = "";
};

/**
 * Get whether the cluster marker is hidden.
 * @return {Boolean}
 */
ClusterMarker_.prototype.isHidden = function () {
  return this.div_.style.display === "none";
};

