Bootstrap and datepicker

HTML

<script src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.1.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.1.0/css/bootstrap.min.css">
<link rel="stylesheet" href="http://eternicode.github.io/bootstrap-datepicker/bootstrap-datepicker/css/datepicker.css">
<script src="http://eternicode.github.io/bootstrap-datepicker/bootstrap-datepicker/js/bootstrap-datepicker.js"></script>
<div id="sandbox-container" class="input-group date" data-provide="datepicker">
  <input type="text" class="form-control ">
  <div class="input-group-addon">
    <span class="glyphicon glyphicon-th"></span>
  </div>
</div>

JavaScript

$('#sandbox-container.input-group.date').datepicker({
  todayHighlight: true,
  format: "dd/mm/yyyy",
  startDate: "-7d",
  endDate: "+3d"
});