Jquery click not fire first time its fire after page refresh

<script type="text/javascript">
       $(document).ready(function () {
           $("#copybutton").zclip({
               path: "../Scripts/ZeroClipboard.swf",
               copy: function () { return currentSelectedRows.data.Key + ": " + App.txtSummary.getValue(); },
               beforeCopy: function () { },
               afterCopy: function () {
                   alert('Copy To Clipboard : \n' + App.txtSummary.getValue());
               }
           });
       });
   </script>

<Content>
                                  <a id="copybutton" href="#" class="btncpy">Copy To ClipBoard</a>
                             </Content