javascript - google-maps marker location -

ok... below js web template - can't find update map marker location lat , long.

/*!  * jquery fn google map 3.0-rc  * http://code.google.com/p/jquery-ui-map/  * copyright (c) 2010 - 2012 johan säll larsson  * licensed under mit license: http://www.opensource.org/licenses/mit-license.php  */ ( function($) {  /**  * @param name:string  * @param prototype:object  */ $.a = function(name, prototype) {      var namespace = name.split('.')[0];     name = name.split('.')[1];      $[namespace] = $[namespace] || {};     $[namespace][name] = function(options, element) {         if ( arguments.length ) {             this._setup(options, element);         }     };      $[namespace][name].prototype = $.extend({         'namespace': namespace,         'pluginname': name     }, prototype);      $.fn[name] = function(options) {          var ismethodcall = typeof options === "string",             args = array.prototype.slice.call(arguments, 1),             returnvalue = this;          if ( ismethodcall && options.substring(0, 1) === '_' ) {              return returnvalue;          }          this.each(function() {             var instance = $.data(this, name);             if (!instance) {                 instance = $.data(this, name, new $[namespace][name](options, this));             }             if (ismethodcall) {                 returnvalue = instance[options].apply(instance, args);             }         });          return returnvalue;       };  };  $.a('ui.gmap', {      /**      * map options      * @see http://code.google.com/intl/sv-se/apis/maps/documentation/javascript/reference.html#mapoptions      */     options: {         maptypeid: 'roadmap',         zoom: 5      },      /**      * or set options      * @param key:string      * @param options:object      * @return object      */     option: function(key, options) {         if (options) {             this.options[key] = options;             this.get('map').set(key, options);             return this;         }         return this.options[key];     },      /**      * setup plugin basics,       * @param options:object      * @param element:node      */     _setup: function(options, element) {         this.el = element;         options = options || {};         jquery.extend(this.options, options, { 'center': this._latlng(options.center) });         this._create();         if ( this._init ) { this._init(); }     },      /**      * instanciate google maps object      */     _create: function() {         var self = this;         this.instance = { 'map': new google.maps.map(self.el, self.options), 'markers': [], 'overlays': [], 'services': [] };         google.maps.event.addlisteneronce(self.instance.map, 'bounds_changed', function() { $(self.el).trigger('init', self.instance.map); });         self._call(self.options.callback, self.instance.map);     },      /**      * adds latitude longitude pair bounds.      * @param position:google.maps.latlng/string      */     addbounds: function(position) {         var bounds = this.get('bounds', new google.maps.latlngbounds());         bounds.extend(this._latlng(position));         this.get('map').fitbounds(bounds);         return this;     },      /**      * helper function check if latlng within viewport      * @param marker:google.maps.marker      */     inviewport: function(marker) {         var bounds = this.get('map').getbounds();         return (bounds) ? bounds.contains(marker.getposition()) : false;     },      /**      * adds custom control map      * @param panel:jquery/node/string        * @param position:google.maps.controlposition         * @see http://code.google.com/intl/sv-se/apis/maps/documentation/javascript/reference.html#controlposition      */     addcontrol: function(panel, position) {         this.get('map').controls[position].push(this._unwrap(panel));         return this;     },      /**      * adds marker map      * @param markeroptions:google.maps.markeroptions      * @param callback:function(map:google.maps.map, marker:google.maps.marker) (optional)      * @return $(google.maps.marker)      * @see http://code.google.com/intl/sv-se/apis/maps/documentation/javascript/reference.html#markeroptions      */     addmarker: function(markeroptions, callback) {         markeroptions.map = this.get('map');         markeroptions.position = this._latlng(markeroptions.position);         var marker = new (markeroptions.marker || google.maps.marker)(markeroptions);         var markers = this.get('markers');         if ( marker.id ) {             markers[marker.id] = marker;         } else {             markers.push(marker);         }         if ( marker.bounds ) {             this.addbounds(marker.getposition());         }         this._call(callback, markeroptions.map, marker);         return $(marker);     },      /**      * clears type      * @param ctx:string    e.g. 'markers', 'overlays', 'services'      */     clear: function(ctx) {         this._c(this.get(ctx));         this.set(ctx, []);         return this;     },      _c: function(obj) {         ( var property in obj ) {             if ( obj.hasownproperty(property) ) {                 if ( obj[property] instanceof google.maps.mvcobject ) {                     google.maps.event.clearinstancelisteners(obj[property]);                     if ( obj[property].setmap ) {                         obj[property].setmap(null);                     }                 } else if ( obj[property] instanceof array ) {                     this._c(obj[property]);                 }                 obj[property] = null;             }         }     },      /**      * returns objects specific property , value, e.g. 'category', 'tags'      * @param ctx:string    in context, e.g. 'markers'       * @param options:object    property:string property search within, value:string, operator:string (optional) (and/or)      * @param callback:function(marker:google.maps.marker, isfound:boolean)      */     find: function(ctx, options, callback) {         var obj = this.get(ctx);         options.value = $.isarray(options.value) ? options.value : [options.value];         ( var property in obj ) {             if ( obj.hasownproperty(property) ) {                 var isfound = false;                 ( var value in options.value ) {                     if ( $.inarray(options.value[value], obj[property][options.property]) > -1 ) {                         isfound = true;                     } else {                         if ( options.operator && options.operator === 'and' ) {                             isfound = false;                             break;                         }                     }                 }                 callback(obj[property], isfound);             }         }         return this;     },      /**      * returns instance property key. has ability set object if property not exist      * @param key:string      * @param value:object(optional)      */     get: function(key, value) {         var instance = this.instance;         if ( !instance[key] ) {             if ( key.indexof('>') > -1 ) {                 var e = key.replace(/ /g, '').split('>');                 ( var = 0; < e.length; i++ ) {                     if ( !instance[e[i]] ) {                         if (value) {                             instance[e[i]] = ( (i + 1) < e.length ) ? [] : value;                         } else {                             return null;                         }                     }                     instance = instance[e[i]];                 }                 return instance;             } else if ( value && !instance[key] ) {                 this.set(key, value);             }         }         return instance[key];     },      /**      * triggers infowindow open      * @param infowindowoptions:google.maps.infowindowoptions      * @param marker:google.maps.marker (optional)      * @param callback:function (optional)      * @see http://code.google.com/intl/sv-se/apis/maps/documentation/javascript/reference.html#infowindowoptions      */     openinfowindow: function(infowindowoptions, marker, callback) {         var iw = this.get('iw', infowindowoptions.infowindow || new google.maps.infowindow);         iw.setoptions(infowindowoptions);         iw.open(this.get('map'), this._unwrap(marker));          this._call(callback, iw);         return this;     },      /**      * triggers infowindow close      */     closeinfowindow: function() {         if ( this.get('iw') != null ) {             this.get('iw').close();         }         return this;     },      /**      * sets instance property      * @param key:string      * @param value:object      */     set: function(key, value) {         this.instance[key] = value;         return this;     },      /**      * refreshes map      */     refresh: function() {         var map = this.get('map');         var latlng = map.getcenter();         $(map).triggerevent('resize');         map.setcenter(latlng);         return this;     },      /**      * destroys plugin.      */     destroy: function() {         this.clear('markers').clear('services').clear('overlays')._c(this.instance);         jquery.removedata(this.el, this.name);     },      /**      * helper method calling function      * @param callback      */     _call: function(callback) {         if ( callback && $.isfunction(callback) ) {             callback.apply(this, array.prototype.slice.call(arguments, 1));         }     },      /**      * helper method google.maps.latlng      * @param latlng:string/google.maps.latlng      */     _latlng: function(latlng) {         if ( !latlng ) {             return new google.maps.latlng(0.0, 0.0);         }         if ( latlng instanceof google.maps.latlng ) {             return latlng;         } else {             latlng = latlng.replace(/ /g,'').split(',');             return new google.maps.latlng(latlng[0], latlng[1]);         }     },      /**      * helper method unwrapping jquery/dom/string elements      * @param obj:string/node/jquery      */     _unwrap: function(obj) {         return (!obj) ? null : ( (obj instanceof jquery) ? obj[0] : ((obj instanceof object) ? obj : $('#'+obj)[0]) )     }  });  jquery.fn.extend( {      triggerevent: function(eventtype) {         google.maps.event.trigger(this[0], eventtype);         return this;     },      addeventlistener: function(eventtype, eventdataorcallback, eventcallback) {         if ( google.maps && this[0] instanceof google.maps.mvcobject ) {             google.maps.event.addlistener(this[0], eventtype, eventdataorcallback);         } else {             if (eventcallback) {                 this.bind(eventtype, eventdataorcallback, eventcallback);             } else {                 this.bind(eventtype, eventdataorcallback);             }          }         return this;     }      /*removeeventlistener: function(eventtype) {         if ( google.maps && this[0] instanceof google.maps.mvcobject ) {             if (eventtype) {                 google.maps.event.clearlisteners(this[0], eventtype);             } else {                 google.maps.event.clearinstancelisteners(this[0]);             }         } else {             this.unbind(eventtype);         }         return this;     }*/  });   jquery.each(('click rightclick dblclick mouseover mouseout drag dragend').split(' '), function(i, name) {     jquery.fn[name] = function(a, b) {         return this.addeventlistener(name, a, b);     } });  } (jquery) );