title: RadAjaxManager OnRequestStart is not fired when press for the second time on a button?
body: <p>RadAjaxManager OnRequestStart is not fired when press for the second time on a button.</p>
  
  <p><strong>1. Button post back working good.
  2. No javascript error.</strong></p>
  
  <p>Code Here:</p>
  
  <p><strong>Rad code block</strong></p>
  
  <p></p>
  
  <pre><code>    &lt;telerik:RadCodeBlock ID="RadCodeBlock1" runat="server"&gt;
          &lt;script type="text/javascript"&gt;
              var currentLoadingPanel = null;
              var currentUpdatedControl = null;
              var btn1 = $find("&lt;%= btnsave.ClientID%&gt;");
              function requestStart(sender, args) {
                  currentLoadingPanel = $find("&lt;%= RadAjaxLoadingPanel1.ClientID%&gt;");
                  btn1 = $find("&lt;%= btnsave.ClientID%&gt;");
                  if (args.get_eventTarget() == "&lt;%= btnsave.UniqueID %&gt;") {
                      currentUpdatedControl = "&lt;%= importprocess.ClientID %&gt;";
                      //show the loading panel over the updated control   
                      currentLoadingPanel.show(currentUpdatedControl);
                  }
              }
  
              function responseEnd() {
  
                  //hide the loading panel and clean up the global variables               
                  if (currentLoadingPanel != null) {
                      currentLoadingPanel.hide(currentUpdatedControl);
                  }
                  currentUpdatedControl = null;
                  currentLoadingPanel = null;
  
              }
  
          &lt;/script&gt;
      &lt;/telerik:RadCodeBlock&gt;
      &lt;telerik:RadAjaxManager ID="RadAjaxManager1"  runat="server"&gt;
          &lt;AjaxSettings&gt;
              &lt;telerik:AjaxSetting AjaxControlID="btnstart"&gt;
                  &lt;UpdatedControls&gt;
                      &lt;telerik:AjaxUpdatedControl ControlID="importprocess" /&gt;
                  &lt;/UpdatedControls&gt;
              &lt;/telerik:AjaxSetting&gt;
                &lt;telerik:AjaxSetting AjaxControlID="btnsave"&gt;
                  &lt;UpdatedControls&gt;
                      &lt;telerik:AjaxUpdatedControl ControlID="btnsave" &gt;&lt;/telerik:AjaxUpdatedControl&gt;
                  &lt;/UpdatedControls&gt;
              &lt;/telerik:AjaxSetting&gt;
          &lt;/AjaxSettings&gt;
           &lt;ClientEvents OnRequestStart="requestStart" OnResponseEnd="responseEnd"&gt;&lt;/ClientEvents&gt;
      &lt;/telerik:RadAjaxManager&gt;
  </code></pre>
  
  <p><strong>RadAjaxLoadingPanel</strong></p>
  
  <p>
                                          
                                              
                                          
                                      
                                  </p>