Hi,

 

Finally i achieved by this way;

 The solution is.

          <script type="text/javascript">
              var ClickedUploderId = "";
              function CuteWebUI_AjaxUploader_OnStart() {
                          var uploader1 = document.getElementById("<%= uploader1.ClientID %>");
                          var uploader2 = document.getElementById("<%= uploader2.ClientID %>");
                          var hidden = this;
                          ClickedUploderId = "";
                              if (hidden.id == "uploader1") {
                                //if upload1 uploading,disable upload2
                                uploader2.internalobject.insertBtn.disabled = "disabled";
                                ClickedUploderId = "upload1";
                              }
                              else {
                                //if upload2 uploading,disable upload1
                                uploader1.internalobject.insertBtn.disabled = "disabled";
                                ClickedUploderId = "upload2";
                              }
                          }
                          function CuteWebUI_AjaxUploader_OnStop() { //  "Cancel All Update" call
                          var uploader1 = document.getElementById("<%= uploader1.ClientID %>");
                          var uploader2 = document.getElementById("<%= uploader2.ClientID %>");   
                            if (ClickedUploderId == "upload1") {
                                    uploader2.internalobject.insertBtn.disabled = "";
                                  }
                                else
                                { uploader1.internalobject.insertBtn.disabled = ""; }
                          }
              </script>

 

At last,