问点击"show map“按钮(类似Airbnb)后，如何使特定标记的infobox默认打开？

EN

function onHtmlClick(key){
google.maps.event.trigger(markers[key], "click");
}
<a href="#" class="btn_map location_map_btn properties" data- 
toggle="modal" data-target="#myModal" onclick="onHtmlClick(1)">View Larger 
Map <i class="icon-location-5"></i></a>

 (function(A) {

if (!Array.prototype.forEach)
    A.forEach = A.forEach || function(action, that) {
        for (var i = 0, l = this.length; i < l; i++)
            if (i in this)
                action.call(that, this[i], i, this);
        };

    })(Array.prototype);

    var
    mapObject,
    markers = [],
    markersData = {
        'Single_hotel': [
        {
            name: 'Villas',
            location_latitude: 37.713490, 
            location_longitude: 20.980900,
            map_image_url: 'img/villas/280.jpg',
            name_point: 'Aeolos Luxury Villas',
            description_point: 'Lorem Ipsum',
            get_directions_start_address: '',
            phone: '+30 2641 085625',
            url_point: 'single_hotel.html'
        },
        {
            name: 'Villas2',
            location_latitude: 37.713490, 
            location_longitude: 20.980900,
            map_image_url: 'img/villas/280.jpg',
            name_point: 'Aeolos Luxury Villas',
            description_point: 'Lorem Ipsum',
            get_directions_start_address: '',
            phone: '+30 2641 085625',
            url_point: 'single_hotel.html'
        }
        ]

    };


        var mapOptions = {
            zoom: 14,
            center: new google.maps.LatLng(37.859490, 20.925600),
            mapTypeId: google.maps.MapTypeId.ROADMAP,

            mapTypeControl: false,
            mapTypeControlOptions: {
                style: google.maps.MapTypeControlStyle.DROPDOWN_MENU,
                position: google.maps.ControlPosition.LEFT_CENTER
            },
            panControl: false,
            panControlOptions: {
                position: google.maps.ControlPosition.TOP_RIGHT
            },
            zoomControl: true,
            zoomControlOptions: {
                style: google.maps.ZoomControlStyle.LARGE,
                position: google.maps.ControlPosition.TOP_LEFT
            },
            scrollwheel: false,
            scaleControl: false,
            scaleControlOptions: {
                position: google.maps.ControlPosition.TOP_LEFT
            },
            streetViewControl: true,
            streetViewControlOptions: {
                position: google.maps.ControlPosition.LEFT_TOP
            }
            ]
        };
        var
        marker;
        mapObject = new google.maps.Map(document.getElementById('map_modal'), mapOptions);
        for (var key in markersData)
            markersData[key].forEach(function (item) {
                marker = new google.maps.Marker({
                    position: new google.maps.LatLng(item.location_latitude, item.location_longitude),
                    map: mapObject,
                    icon: 'img/pins/' + key + '.png',
                });

                if ('undefined' === typeof markers[key])
                    markers[key] = [];
                markers[key].push(marker);
                google.maps.event.addListener(marker, 'click', (function () {
  closeInfoBox();
  getInfoBox(item).open(mapObject, this);
  mapObject.setCenter(new google.maps.LatLng(item.location_latitude, item.location_longitude));
 }));

});

    function hideAllMarkers () {
        for (var key in markers)
            markers[key].forEach(function (marker) {
                marker.setMap(null);
            });
    };

    function closeInfoBox() {
        $('div.infoBox').remove();
    };

    function getInfoBox(item) {
        return new InfoBox({
            content:
            '<div class="marker_info" id="marker_info">' +
            '<img src="' + item.map_image_url + '" alt="Image"/>' +
            '<h3>'+ item.name_point +'</h3>' +
            '<span>'+ item.description_point +'</span>' +
            '<div class="marker_tools">' +
            '<form action="http://maps.google.com/maps" method="get" target="_blank" style="display:inline-block""><input name="saddr" value="'+ item.get_directions_start_address +'" type="hidden"><input type="hidden" name="daddr" value="'+ item.location_latitude +',' +item.location_longitude +'"><button type="submit" value="Get directions" class="btn_infobox_get_directions">Directions</button></form>' +
                '<a href="tel://'+ item.phone +'" class="btn_infobox_phone">'+ item.phone +'</a>' +
                '</div>' +
                '<a href="'+ item.url_point + '" class="btn_infobox">Details</a>' +
            '</div>',
            disableAutoPan: false,
            maxWidth: 0,
            pixelOffset: new google.maps.Size(10, 125),
            closeBoxMargin: '5px -20px 2px 2px',
            closeBoxURL: "http://www.google.com/intl/en_us/mapfiles/close.gif",
            isHidden: false,
            alignBottom: true,
            pane: 'floatPane',
            enableEventPropagation: true
        });


    };
 <!-- Button to Open the Modal -->
                <a href="#" class="btn_map location_map_btn properties" data-toggle="modal" data-target="#myModal" onclick="onHtmlClick(1)">View Larger Map <i class="icon-location-5"></i></a>


  <!-- The Modal map-->
  <div class="modal fade" id="myModal">
    <div class="modal-dialog">
      <div class="modal-content">

        <!-- Modal Header -->
        <div class="modal-header">
          <h4 class="modal-title">Search By Map</h4>
          <button type="button" class="close" data-dismiss="modal">&times;</button>
        </div>

        <!-- Modal body -->
        <div class="modal-body">
          <div id="map_modal" class="map"></div>
        </div>

        <!-- Modal footer -->
        <div class="modal-footer">
          <button type="button" class="btn_map location_map_btn properties" data-dismiss="modal">Close</button>
        </div>

      </div>
    </div>
  </div>    
<!-- End modal map -->