<script type="text/javascript">
   $("#communication_form").submit(function ( event ) {
      var phone_value = $("#cb_Phone").is(':checked') ? 1 : 0;
      var email_value = $("#cb_Email").is(':checked') ? 1 : 0;
      var skype_value = $("#cb_Skype").is(':checked') ? 1 : 0;
      var website_value = $("#cb_Website").is(':checked') ? 1 : 0;
      var twitter_value = $("#cb_Twitter").is(':checked') ? 1 : 0;
      var hasError = false;

      if(phone_value == 0 && email_value == 0 && skype_value == 0 && website_value == 0 && twitter_value == 0)
      {
         var message = $("#errormessage").html("Please Select");//alert("Hassan");
         message.show();
         hasError = true;
      }
      else
      {
         hasError = false;
      }
      if(hasError)
      {
        event.preventDefault();
      }
   });
</script>

<table align="center" width="100%">
      <tr>
         <td>

         </td>
         <td></td>
         <td>
            <label for="validation_all" id="errormessage" visible="false" style="font-size:60%; color:red;"></label>
         </td>
      </tr>
</table>

else
  {
     hasError = false;
     $("#errormessage").empty().hide(); // This line will clear the div and hide
  }

$("#cb_Phone,#cb_Email,#cb_Skype,#cb_Website,#cb_Twitter").change(function() {
    if(this.checked) {
       $("#errormessage").attr('visible','false');
    }
});

$("#communication_form").submit(function ( event ) {
   // Length 0 means no checkbox is selected
   if($("#cb_Phone,#cb_Email,#cb_Skype,#cb_Website,#cb_Twitter:checked").length = 0){
      var message = $("#errormessage").html("Please Select");//alert("Hassan");
      message.show();
      event.preventDefault();
   }
});

if(phone_value == 0 && email_value == 0 && skype_value == 0 && website_value == 0 && twitter_value == 0)
      {
         var message = $("#errormessage").html("Please Select");//alert("Hassan");
         message.show();
         hasError = true;
      }
      else
      {
        $("#errormessage").html('');
// OR $("#errormessage").hide();
         hasError = false;
      }

var message = $("#errormessage").html("Please Select");//alert("Hassan");

    if(phone_value == 0 && email_value == 0 && skype_value == 0 && website_value == 0 && twitter_value == 0)
    {
        message.show();
        hasError = true;
    }
    else
    {
        hasError = false;
        message.empty().hide();
    }