Show namespace pollution

pollution.js

(function(global, undefined) {

   // name, prefix, depth
   var print = function(n, p, d) {
     var b = p[n];
     // Allow base indenting based on the depth
     var response = '\n' + 
       (new Array(d).join('  ')) +
       n + 
       ' (' + (typeof b) + ')';

     // Could apply hasOwnProperty filter 
     for (var k in b) {
       response += print(k, b, d + 1);
     }        
     return response; 
   };

   var body = document.getElementsByTagName('body')[0];
   var frame = document.createElement('frame');
   frame.src = 'about:blank';
   body.appendChild(frame);

   var clean = parent.frames[0];

   var status = document.getElementById('status');
   var output = '';

   for (var p in window) {
     if (typeof clean.window[p] === 'undefined') {
       if (typeof window[p] !== 'undefined') {
         output += print(p, window, 2);
       }
     }
   };

   var report = document.createElement('pre');
   report.innerHTML = output;
   body.appendChild(report);

 }(this));