I'm using the following code to generate marker pins. It loads perfectly, but to the left of this map I have filters. How do I reload the markers without reloading the map? This has been causing some frustration so any help would be appreciated.

Many thanks,

    //Google map results

        var contentStrings = [];

        var infowindow = new google.maps.InfoWindow();

        var mapinited = false;

        var map;

        var myOptions = {

          zoom: 11,

          center: myLatlng,

          mapTypeId: google.maps.MapTypeId.ROADMAP

        }

        var currentinfobox;

        var myLatlng;

        var markersArray=[];

        var LatLngList = [];



$().ready(function() {



    //reinit search 

    if (window.location.hash) {

        submitForm(window.location.hash.replace('#',''));

    }

    else if (readCookie('sf')) {

            //submitForm(readCookie('sf'));

    }



    //init map

    $('#map_view').click(function() {

        if (mapinited) {

            return;

        } else {

            mapinited = true;

            initMap();

        }







    function initMap() {

            locate([Ireland],function(result) {

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

        myLatlng = new google.maps.LatLng(result.lat(),result.lng());



              var key =0;



               $.each(map_results, function(key, value){

        LatLngList[key] = new google.maps.LatLng(value.lat,value.long)

        contentStrings[key] =

                '<div id=ginfo_content class=map-pop-up>'+

                  '<span class=content-top>&nbsp;</span>'+

                  '<div class=content-middle>'+

                    '<div class=map-filler>'+

                      '<a class=map-close href=javascript:; onclick=infowindow.close(); title=Close>x</a>'+

                      '<br class=clearfix>'+

                      '<div class=map-pop-up-left>'+

                        '<a href=profile.php?id='+ value.user_id +'><div class=thumbnail><img src='+ value.image +' width=64 height=64></div></a>'+



                        '<a href=javascript:; class=user-contact onClick=to='+ value.user_id +';contact_showCaptcha();pop_up('pop-up-contact');>Contact</a>'+



                      '</div>'+

                      '<div class=map-pop-up-right>'+

                        '<h2><a href=profile.php?id='+ value.user_id +'>'+ value.firstname +' '+value.lastname+',</a> '+ value.address +'</h2>'+

                        '<p>'+ stripslashes(value.about) +'</p>'+

                      '</div>'+

                      '<br class=clearfix>'+

                      '<div class=map-pop-up-footer><a href=profile.php?id='+ value.user_id +' class=view-profile>View Profile</a><span class=telephone>Telephone: '+ value.phone +'</span></div>'+

                    '</div>'+

                  '</div>'+

                  '<span class=content-bottom>&nbsp;</span>'+

                '</div>';

                 key++;

               });//end each



                map_results=;



        google.maps.event.addListener(infowindow, 'domready', function() {

            var infocontent = $('#ginfo_content').clone();

            var l = $('#ginfo_content').parent().parent().parent().addClass('original_popup').html('');

            $('.original_popup').append(infocontent).show();

            $('.original_popup').css('width','360px').css('height','230px').css('left','+=27px').css('top','+=65px');

        });



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

            if (this.getZoom() > 14) // Change max/min zoom here

                this.setZoom(14);        

            google.maps.event.removeListener(zoomChangeBoundsListener);

        });

        var infoboxlistener = google.maps.event.addListener(map, 'zoom_changed', `enter code here`function() {

            infowindow.close();

        });

        loadMapInit(LatLngList,contentStrings);



    });

    }



    });



  });