title: How to add vertex image in mxGraph
body: <p>I am creating a toolbar in mxGraph using javascript. From toolbar I have set some images like triangle and dragging and dropping those images into my graph div area. I am adding these images like this</p>
  
  <pre><code>addVertex('rounded.gif', 100, 40, 'shape=rounded');
  </code></pre>
  
  <p>Now I wanted to add external vertex image like car, laptop. Please someone suggest me how to do this. instead of <strong>shape=rounded</strong> what I have to give.</p>