function totalHours(){
  var start = document.getElementById("starttime").value;
  var end = document.getElementById("finishtime").value;
  var breaks = document.getElementById("breaktime").value;


  var hours = parseTime(end) - parseTime(start);

  var out = (hours / 60) - breaks;

  $('#totalhours').val(out);
  $('#totalhours').trigger('input');

  // document.getElementById("totalhours").value= out;

  // document.getElementById("breaktime").value=0;



function parseTime(s) {
  var c = s.split(':');
  return parseInt(c[0]) * 60 + parseInt(c[1]);
}
}

$(document).ready(function() {
  $("#breaktime").keyup(function(){
    totalHours();
  });
});

// function nantest(){
//   var value = document.getElementById("totalhours").value;
//   alert(isNan(value));
// }

$(document).ready(function() {
  $('#totalhours').validator({
    custom : {
      hourcheck : function($el) { return Boolean($el.val() >= 1);}
      },
    errors: {
      hourcheck : "Your number of hours must be positive."
      }
  });
});