script type="text/javascript" language="javascript">
       function Check() {
           var text = parent.document.getElementById('%=HiddenField1.ClientID %>');  //如有母板页+pardent. ，普通取值不用加    
           if (confirm("您已运输" + text.value + "台")) {
               return true;
           }
           else {
               return false;
           }
       } 
   /script>