Bootstrap popup

1)Need to give bootstrap reference

<div class="modal fade" id="conformtionpopup" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
          <div class="modal-dialog" role="document">
            <div class="modal-content">
              <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
                <h4 class="modal-title" id="myModalLabel">Successfully Submission</h4>
              </div>
              <div class="modal-body">
                <div class="main-popup">
<p><strong>Your document has been successfully submitted.please check your inbox for email confirmation</strong></p>
                </div>
              </div>
              <div class="modal-footer">
                <div>
                  <button type="button" class="btn btn-colse" data-dismiss="modal">Close</button>
                  <button type="button" class="btn btn-colse" onclick="submitanother()">Submit Another</button>
                </div>
              </div>
            </div>
          </div>
        </div>