$(document).ready(function(){
  $('.StartDate input').datepicker({
    minDate: 0,
    maxDate: "+60",
    onSelect: function(selected){
      $('.EndDate input').datepicker("option","minDate",selected)
    }
  });
  $('.EndDate input').datepicker({
    minDate: 0,
    maxDate: "+60",
    onSelect: function(selected){
      $('.StartDate input').datepicker("option","maxDate",selected)
    }
  });
});