pollution.js

(function(global, undefined) {
   // Protect and log errors
   try {
     var log = (typeof console.log === 'function') ? 
       console.log : 
       function(m) {};
     var MAXDEPTH = 2;
     // name, prefix, depth
     var print = function(n, p, d) {

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

         // Only check after we've summarized the object name
         if (d >= MAXDEPTH) {
           return true;
         }

         // Could apply hasOwnProperty filter 
         // This doesn't account for functions with child properties
         // Don't iterate through the lenght of the string 
         // We don't need all objects if there are third party libraries
         if (typeof b === 'object') {
           for (var k in b) {
             if (b.hasOwnProperty(k)) {
               response += print(k, b, d + 1);
             }
           }        
         }
         
       } catch (x) {

       } finally {
         return response; 
         
       }
     };

     var body = document.getElementsByTagName('body')[0];

     // Establish a baseline of an unpolluted namespace in a new frame
     var frame = document.createElement('frame');
     frame.src = '/blank.html';
     body.appendChild(frame);
     var clean = parent.frames[0];
     var output = '';

     for (var p in window) {
       if (typeof clean.window[p] === 'undefined') {
         if (typeof window[p] !== 'undefined') {
           output += print(p, window, 1);
         }
       }
     };

     var report = document.createElement('pre');
     var style = "position: fixed; top: 0; right: 0; " +
	 "opacity:0.6; border-radius: 10px;" + 
	 "overflow: hidden; " +
	 "border: 2px solid #ccc; background: #222; color: #fff;" + 
	 "margin: 10px; padding: 15px;";
     report.setAttribute("style", style);
     report.innerHTML = output;
     body.appendChild(report);
     
   } catch (x) {

     try {
       //       console.log(x);
       var img = document.createElement('img');
       img.src = 'http://wal.sh/bug/img.php?error=true';
       img.className = '⚠';
       document.getElementsByTagName('body')[0].appendChild(img);
     } catch (x) {

     }
   }

 }(this));