panto and zoom

HTML

<script src="//maps.google.com/maps/api/js?sensor=false"></script>
<script src="http://app.essoduke.org/tinyMap/jquery.tinyMap-2.9.9.min.js?ver=2.9.9"></script>
<button type="button" id="a">Panto</button>

<div id="map"></div>

CSS

#map{width:100%;height:360px}

JavaScript

var map = $('#map');
var markers = [
    {'addr': ['25.04151536540612', '121.56354904174805']},
    {'addr': ['25.041282077030896', '121.56741142272949']},
    {'addr': ['25.0383270525352', '121.57045841217041']},
    {'addr': ['25.034516521123315','121.56496524810791']},
    {'addr': ['25.037627167884715', '121.56732559204102']},
    {'addr': ['25.039726809855434', '121.55633926391602']},
    {'addr': ['25.037160575899154', '121.55350685119629']},
    {'addr': ['25.035877438787317', '121.55715465545654']},
    {'addr': ['25.033972149830436', '121.56063079833984']},
    {'addr': ['25.031794640503858', '121.56414985656738']},
    {'addr': ['25.035255306871402', '121.56998634338379']},
    {'addr': ['25.033855498524844', '121.5686559677124']},
    {'addr': ['25.036927279240775', '121.57376289367676']},
    {'addr': ['25.041593128099265', '121.5723466873169']},
    {'addr': ['25.04485911668452', '121.56917095184326']},
    {'addr': ['25.04536455952624', '121.56402111053467']},
    {'addr': ['25.04380934412532', '121.55998706817627']},
    {'addr': ['25.041904178378704', '121.55848503112793']},
    {'addr': ['25.038521464229383', '121.55900001525879']}
];

map.tinyMap({
    'center': markers[0].addr,
    'marker': markers,
    'zoom': 17    
});

$(document)
    
    .on('click', '#a', function () {
        
        // 移動地圖
        map.tinyMap('panto', markers[5].addr) 
        // 設置 zoom
           .tinyMap('modify', {
              'zoom': 15
           });
        
    });