title: jquery ui Progress bar do not stop when clicking on stop button
body: <p>I am trying to use jquery ui progressbar. Below is code i have</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head&gt;
  &lt;link href="http://code.jquery.com/ui/1.9.2/themes/base/jquery-ui.css" rel="stylesheet"&gt;
  &lt;script src="http://code.jquery.com/jquery-1.8.3.js"&gt;&lt;/script&gt;
  &lt;script src="http://code.jquery.com/ui/1.9.2/jquery-ui.js"&gt;&lt;/script&gt;
  &lt;script&gt;
  $(document).ready(function(){
   $('#progressBar').progressbar({
               value: 1
           });
  });
  var statusTracker ;
  var percentage = 0;
  function checkStatus() {//function to fill progress bar
   percentage = percentage +5;
   $("#progressBar &gt; .ui-progressbar-value").animate({
    width : percentage + "%"
   });
   statusTracker = setTimeout(function() {//call this function every 20ms
    checkStatus()
   }, 20);
  }
  
  function startProgress(){
  checkStatus();
  }
  
  function stop(){//stop progress bar
  
  
  clearTimeout(statusTracker);
  
  }
  &lt;/script&gt;
  &lt;/head&gt;
  
  &lt;body&gt;
  &lt;div id="progressBar" style="opcity:1; height:30px;width:500px;" &gt;&lt;/div&gt;
  &lt;p&gt;
  &lt;input type="submit" value="Start" onclick="startProgress()"/&gt;
  
  &lt;input type="submit" value="Stop" onclick="stop()"/&gt;
  &lt;/p&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>When i am clicking on stop button progress bar do not stop.
  My clearTimeout() function is not working. 
  Any help will be appreciable .</p>