title: alert those textboxes who is still empty
body: <pre><code>function checkvalue() { 
      var areaDesc = document.getElementById('areaDesc').value;
      var cboLeaveType = document.getElementById('cboLeaveType').value;
      var fromDate = document.getElementById('fromDate').value;
      var toDate = document.getElementById('toDate').value;
  
      if (areaDesc == "" || fromDate == "" || toDate == "" || cboLeaveType = "")
      {            
          alert("empty hoys");            
      }
      else
      {
          document.getElementById('hdnAction').value = "go";
          document.frmLeave.submit();
      }               
  }
  </code></pre>
  
  <p>thats the code, it is working but, I want to alert those area who is still empty, </p>
  
  <p>for example.</p>
  
  <p><strong>ex1:</strong> areaDesc, fromDate, toDate is not empty, it must alert "txtSignOff still empty";</p>
  
  <p><strong>ex2:</strong> areaDesc, fromDate is not empty it must alert "toDate,txtSignOff still empty";
  or</p>
  
  <p>toDate is empty</p>
  
  <p>toDate is empty</p>