force_zoom_level.html

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

<div id="map-side-bar">
  <div class="map-location" data-jmapping="{id: 1, point: {lng: -122.2678847, lat: 37.8574888}, category: 'market'}">
    <a href="#" class="map-link">Berkeley Bowl</a>
    <div class="info-box">
      <p>A great place to get all your groceries, especially fresh fruits and vegetables.</p>
    </div>
  </div>
</div>

force_zoom_level.js

$(document).ready(function(){
  $('#map').jMapping({
    force_zoom_level: 15,
    default_zoom_level: 15
  });
});