int_test.html

<!doctype html>
<html>
<head>
  <title>Add Two Ints</title>
  <script type="text/javascript" src="http://brown-ros-pkg.googlecode.com/svn/trunk/experimental/rosbridge/ros.js"></script>
  <script type="text/javascript">
var con = new Connection('ws://localhost:9090');
con.setOnOpen(function() {
  con.callService('/add_two_ints','[8,7]',function(rsp) {
    con.callService('/add_two_ints','['+rsp.c+',10]',function(rsp) {
      con.callService('/add_two_ints',[17,rsp.c],function(rsp) {
        document.getElementById("output").innerHTML = rsp.c;
      });
    });
  });
});
  </script>
</head>
<body>
  answer: <span id="output"></span>
</body>
</html>