function Counter(initDate, id, msg){
	  this.beginDate = new Date(initDate);
	  this.seconds = 0, this.minutes = 0, this.hours = 0;
	  this.days = 0, this.weeks = 0, this.months = 0, this.years = 0;
	  document.getElementById(id).title = msg;
	  this.calculate(id);
  }

  Counter.prototype.calculate=function(id){
	  var secDiff = ((new Date()) - this.beginDate)/1000;
	  this.seconds = Math.floor(secDiff);
	  this.minutes = Math.floor(secDiff/60);
	  this.hours = Math.floor(secDiff/3600);
	  this.days = Math.floor(secDiff/86400);
	  this.weeks = Math.floor(secDiff/604800);
	  this.months = Math.floor(secDiff/2629743.83);
	  this.years = Math.floor(secDiff/31556925.99);
	  var countainer = document.getElementById(id);
	  countainer.innerHTML =
	  	  //"<strong>" + this.years + "</strong> <small>" + (this.years == 1? "year" : "years") + "</small>" +
		  //" <strong>" + this.months + "</strong> <small>" + (this.months == 1? "month" : "months") + "</small>" +
		  //"" + this.days + " days, or " +
		  //" <strong>" + this.hours + "</strong> <small>" + (this.hours == 1? "hour" : "hours") + "</small>" +
		  "" + this.seconds + " seconds";
	  var self = this;
	  setTimeout(function(){self.calculate(id);}, 1000);
  }

function CountUp(initDate, id, msg){
	  this.beginDate = new Date(initDate);
	  this.msg = msg;
	  this.numOfDays = [ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ];
	  this.borrowed = 0, this.years = 0, this.months = 0, this.days = 0;
	  this.hours = 0, this.minutes = 0, this.seconds = 0;	
	  this.updateNumOfDays();
	  this.calculate(id);
  }

  CountUp.prototype.updateNumOfDays=function(){
	  var dateNow = new Date();
	  var currYear = dateNow.getFullYear();
	  if ( (currYear % 4 == 0 && currYear % 100 != 0 ) || currYear % 400 == 0 ) {
		  this.numOfDays[1] = 29;
	  }	
	  var self = this;
	  setTimeout(function(){self.updateNumOfDays();}, (new Date((currYear+1), 1, 1) - dateNow));
  }

  CountUp.prototype.datePartDiff=function(then, now, MAX){
	  var diff = now - then - this.borrowed;
	  this.borrowed = 0;
	  if ( diff > -1 ) return diff;
	  this.borrowed = 1;
	  return (MAX + diff);	
  }

  CountUp.prototype.formatTime=function(){
	  this.seconds = this.addLeadingZero(this.seconds);
	  this.minutes = this.addLeadingZero(this.minutes);
	  this.hours = this.addLeadingZero(this.hours);
  }

  CountUp.prototype.addLeadingZero=function(value){
	  return value < 10 ? ("0" + value) : value;
  }

  CountUp.prototype.calculate=function(id){
	  var currDate = new Date();
	  var prevDate = this.beginDate;
	  this.seconds = this.datePartDiff(prevDate.getSeconds(), currDate.getSeconds(), 60);
	  this.minutes = this.datePartDiff(prevDate.getMinutes(), currDate.getMinutes(), 60);
	  this.hours = this.datePartDiff(prevDate.getHours(), currDate.getHours(), 24);
	  this.days = this.datePartDiff(prevDate.getDate(), currDate.getDate(), this.numOfDays[currDate.getMonth()-1]);
	  this.months = this.datePartDiff(prevDate.getMonth(), currDate.getMonth(), 12);
	  this.years = this.datePartDiff(prevDate.getFullYear(), currDate.getFullYear(),0);
	  this.formatTime();
	  var countainer = document.getElementById(id);
	  countainer.innerHTML =
	  	  "" + this.years + "";
		  //" <strong>" + this.months + "</strong> <small>" + (this.months == 1? "month" : "months") + "</small>" +
		  //" <strong>" + this.days + "</strong> <small>" + (this.days == 1? "day" : "days") + "</small>" +
		  //" <strong>" + this.hours + "</strong> <small>" + (this.hours == 1? "hour" : "hours") + "</small>" +
		  //" <strong>" + this.minutes + "</strong> <small>" + (this.minutes == 1? "minute" : "minutes") + "</small>" +
		  //"" + this.seconds + "";
	  var self = this;
	  setTimeout(function(){self.calculate(id);}, 1000);
  }