Marker not showing on the searched location

I have added the location manager plugin on my wordpress site in which when i had searched location map was displaying but the marker not showing on the searched location i don't know how to show marker. my plugin code is:

    if(!empty($catinfo_arr)){?>
    <script  type="text/javascript" async >

        var CITY_MAP_CENTER_LAT= '<?php echo $latitude?>';
        var CITY_MAP_CENTER_LNG= '<?php echo $longitude?>';
        var CITY_MAP_ZOOMING_FACT= <?php echo $zoom_level;?>;
        var infowindow;     
        var zoom_option = '<?php echo $map_display; ?>';
    //  var markers = <?php echo $catinfo_arr;?>;
        var clustering = '<?php echo $clustering;?>';
        var map;
        var mgr;
        var markerClusterer;        
        var markerArray = [];       
        var pippoint_effects='<?php echo ($templatic_settings['pippoint_effects'] == 'hover')? 'hover':'click';?>';
        var PIN_POINT_ICON_HEIGHT = 32;
        var PIN_POINT_ICON_WIDTH = 20;                      
        var infoBubble = new InfoBubble({maxWidth:210,minWidth:210,minHeight:"auto",padding:0,borderRadius:0,borderWidth:0,overflow:"visible",backgroundColor:"#fff"});
        var isDraggable = jQuery(document).width() > 480 ? true : false;
        var isscrollwheel = jQuery(document).width() > 480 ? true : false;
        var dragging = zoom_changed = false;        
        var bounds_modified = false;
        var new_bounds;
        var query_string='<?php echo $_SERVER['QUERY_STRING'];?>';
        var zoom_changed=1;
        function initialize() {
            bounds = new google.maps.LatLngBounds();
            var myOptions = {
                scrollwheel: isscrollwheel,
                draggable: isDraggable,
                zoom: CITY_MAP_ZOOMING_FACT,
                center: new google.maps.LatLng(CITY_MAP_CENTER_LAT, CITY_MAP_CENTER_LNG),
                mapTypeId: google.maps.MapTypeId.<?php echo $map_type;?>
            }

            map = new google.maps.Map(document.getElementById("map_canvas"),myOptions);         

            /* map style customizer */

            var styles = [<?php echo substr($google_map_customizer,0,-1);?>];           

            map.setOptions({styles: styles});          

            /* Add Google Map marlkers */

            mgr = new MarkerManager( map );

            templ_add_googlemap_markers(markers);          

            if(zoom_option==1){             

                map.fitBounds(bounds);

                map.setCenter(bounds.getCenter());

            }               

            /* but that message is not within the marker's instance data */

            google.maps.event.addListener(map, 'dragstart', function() {

                dragging = false;

            });

            google.maps.event.addListener(map, 'dragend', function() {

                dragging = true;                

            });         

            google.maps.event.addListener(map, 'bounds_changed', function() {

              bounds_modified = true;

              new_bounds = map.getBounds();

            });         

            google.maps.event.addListener(map, 'zoom_changed', function() {

                if(zoom_changed!=1){

                    dragging = true;                    

                }

                zoom_changed=0;

            });

            google.maps.event.addListener(map, 'idle', function(ev){

                refresh_markers();

            });

        }

        google.maps.event.addDomListener(window, 'load', initialize);

    </script>

    <div id="listing_google_map" class="listing_google_map" >

        <div class="map_sidebar">

        <div class="top_banner_section_in clearfix">

            <div class="TopLeft"><span id="triggermap"></span></div>

            <div class="TopRight"></div>

            <div id="map_canvas" style="width: 100%; height:<?php echo $heigh;?>px" class="map_canvas"></div>

        </div>

        </div>

    </div> 

    <script  type="text/javascript" async >

    var maxMap = document.getElementById( 'triggermap' );       

    google.maps.event.addDomListener(maxMap, 'click', showFullscreen);

    function showFullscreen() {     

        jQuery('#map_canvas').toggleClass('map-fullscreen');

        jQuery('.map_category').toggleClass('map_category_fullscreen');

        jQuery('.map_post_type').toggleClass('map_category_fullscreen');

        jQuery('#trigger').toggleClass('map_category_fullscreen');

        jQuery('body').toggleClass('body_fullscreen');

        jQuery('#loading_div').toggleClass('loading_div_fullscreen');

        jQuery('#advmap_nofound').toggleClass('nofound_fullscreen');

        jQuery('#triggermap').toggleClass('triggermap_fullscreen');

        jQuery('.TopLeft').toggleClass('TopLeft_fullscreen');

        window.setTimeout(function() { 

            var center = map.getCenter(); 

            google.maps.event.trigger(map, 'resize'); 

            map.setCenter(center); 

        }, 100);             

    }
    </script>

    <?php

}   

via Chebli Mohamed