<html>
  <head>
    <script>FOAM_FLAGS = {debug: false};</script>
    <script language="javascript" src="../../../../../foam.js"></script>
    <script language="javascript" src="PyTree3.js"></script>
  </head>
  <body>
    <foam class="PyTree"></foam>
  </body>
</html>

<html>
  <head>
    <script>FOAM_FLAGS = {debug: false};</script>
    <script language="javascript" src="../../../../../foam.js"></script>
    <script language="javascript" src="PyTree3.js"></script>
  </head>
  <body>
    <foam id="tree" class="PyTree"></foam>
  </body>
</html>

Add id to foam tag.
Add id to foam tag.
