<div id="mapContainer">
    <iframe src="http://minezmap.com/?plugins=TNW" id="mapFrame" sandbox="allow-scripts">
        <h1>Map not loading?</h1>
        <p>View below for instructions on how to view the map.  For simplicity, all instructions are a single picture showing where the appropriate dialog is and what to click.</p>
        <h2>Chrome</h2>
        <p style="text-align:center;"><img src="http://i.imgur.com/OaKqDiy.png" /></p>
        <h2>Firefox</h2>
        <p style="text-align:center;"><img src="http://i.imgur.com/HAkmjCg.png" /></p>
        <h2>Internet Explorer</h2>
        <p style="text-align:center;"><img src="http://i.imgur.com/boIvUoO.png" /></p>
    </iframe>
</div>

<div id="mapContainer">
    <iframe src="http://minezmap.com/?plugins=TNW" id="mapFrame" sandbox="allow-scripts allow-same-origin">
        <h1>Map not loading?</h1>
        <p>View below for instructions on how to view the map.  For simplicity, all instructions are a single picture showing where the appropriate dialog is and what to click.</p>
        <h2>Chrome</h2>
        <p style="text-align:center;"><img src="http://i.imgur.com/OaKqDiy.png" /></p>
        <h2>Firefox</h2>
        <p style="text-align:center;"><img src="http://i.imgur.com/HAkmjCg.png" /></p>
        <h2>Internet Explorer</h2>
        <p style="text-align:center;"><img src="http://i.imgur.com/boIvUoO.png" /></p>
    </iframe>
</div>

Allow same origin for map
Allow same origin for map