/**

  * Get the time difference between 2 dates in days

  */

 function timeDayDifference(endDate,startDate) {

  var difference = endDate.getTime() - startDate.getTime(); 

  difference -= (Math.floor(difference/1000/60/60/24)*1000*60*60*24);

  return difference;

 }

 /**

  * Get the time difference between 2 dates in hours

  */

 function timeHourDifference(endDate,startDate) {

  var difference = endDate.getTime() - startDate.getTime();

  difference -= (Math.floor(difference/1000/60/60)*1000*60*60);

  return difference;

 }

 /**

  * Get the time difference between 2 dates in minutes

  */

 function timeMinuteDifference(endDate,startDate) {

  var difference = endDate.getTime() - startDate.getTime();

  difference -= (Math.floor(difference/1000/60)*1000*60);

  return difference;

 }

 /**

  * Get the time difference between 2 dates in seconds

  */

 function timeSecondDifference(endDate,startDate) {

  var difference = endDate.getTime() - startDate.getTime();

  difference = Math.floor(difference/1000);

  return difference;

 } 

var startDateTime = new Date(2010,5,10,8,0);

var endDateTime = new Date(2010,5,11,8,0); 

var dayDiff = timeDayDifference(endDateTime,startDateTime) ;

var hourDiff =  timeHourDifference(endDateTime,startDateTime);

var minDiff = timeMinuteDifference(endDateTime,startDateTime); 

var secDiff = timeSecondDifference(endDateTime,startDateTime);