popup.html

<style>
body {
  width: 620px;
  overflow-x:hidden;
  cursor: default;
  text-align: center;
}
.metrics {
  font-size: 1em;
  font-family: Helvetica, Arial, sans-serif;
  display: inline;
}
.metric {
  color: #888;
}

#graph {
  clear: both;
  width: 600px;
  height: 300px;
}
</style>
<script language="javascript" type="text/javascript" src="flot/jquery.js"></script>
<script language="javascript" type="text/javascript" src="flot/jquery.flot.js"></script>
<script language="javascript" type="text/javascript" src="popup.js"></script>
<div class="metrics">You currently have <span id="total" class="metric">0</span> tabs open, and have opened <span id="opened" class="metric">0</span> and closed <span id="closed" class="metric">0</span>.</div>
<div id="graph"></div>