/***********************************************
* Dynamic Countdown script- © Dynamic Drive (http://www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit http://www.dynamicdrive.com/ for this script and 100s more.
***********************************************/

function cdtime(container, targetdate) {
	if (!document.getElementById || !document.getElementById(container)) 
		return
	this.container = document.getElementById(container)
	this.currentTime = new Date()
	this.targetdate = new Date(targetdate)
	this.timesup = false
	this.updateTime()
}

cdtime.prototype.updateTime=function() {
	var thisobj = this
	this.currentTime.setSeconds(this.currentTime.getSeconds()+1)
	setTimeout(function(){thisobj.updateTime()}, 1000) //update time every second
}

cdtime.prototype.displaycountdown = function(baseunit, functionref) {
	this.baseunit = baseunit
	this.formatresults = functionref
	this.showresults()
}

cdtime.prototype.showresults = function() {
	var thisobj = this
	var timediff = (this.targetdate-this.currentTime)/1000 //difference btw target date and current date, in seconds
	if (timediff < 0) { //if time is up
		this.timesup = true
		this.container.innerHTML = this.formatresults()
		return
	}
	var oneMinute = 60 //minute unit in seconds
	var oneHour = 60*60 //hour unit in seconds
	var oneDay = 60*60*24 //day unit in seconds
	var dayfield = Math.floor(timediff/oneDay)
	var hourfield = Math.floor((timediff-dayfield*oneDay)/oneHour)
	var minutefield = Math.floor((timediff-dayfield*oneDay-hourfield*oneHour)/oneMinute)
	var secondfield = Math.floor((timediff-dayfield*oneDay-hourfield*oneHour-minutefield*oneMinute))
	if (this.baseunit == "hours") { //if base unit is hours, set "hourfield" to be topmost level
		hourfield = dayfield*24+hourfield
		dayfield = "n/a"
	}
	else if (this.baseunit == "minutes") { //if base unit is minutes, set "minutefield" to be topmost level
		minutefield = dayfield*24*60+hourfield*60+minutefield
		dayfield = hourfield = "n/a"
	}
	else if (this.baseunit == "seconds") { //if base unit is seconds, set "secondfield" to be topmost level
		var secondfield = timediff
		dayfield = hourfield = minutefield = "n/a"
	}
	this.container.innerHTML = this.formatresults(dayfield, hourfield, minutefield, secondfield)
	setTimeout(function(){thisobj.showresults()}, 1000) //update results every second
}

/////CUSTOM FORMAT OUTPUT FUNCTIONS BELOW//////////////////////////////

//Create your own custom format function to pass into cdtime.displaycountdown()
//Use arguments[0] to access "Days" left
//Use arguments[1] to access "Hours" left
//Use arguments[2] to access "Minutes" left
//Use arguments[3] to access "Seconds" left

//The values of these arguments may change depending on the "baseunit" parameter of cdtime.displaycountdown()
//For example, if "baseunit" is set to "hours", arguments[0] becomes meaningless and contains "n/a"
//For example, if "baseunit" is set to "minutes", arguments[0] and arguments[1] become meaningless etc

function formatNumber(number) {
	if( number < 10 )
		number = "0" + number
	return number
}

function formatresults(){
	// If target date/time is not yet met, display the current state of the countdown clock
	if (this.timesup==false) {
		//var displaystring = arguments[0]+" days "+arguments[1]+" hours "+arguments[2]+" minutes "+arguments[3]+" seconds left until March 23, 2009 18:25:00"
		var displaystring = formatNumber(arguments[0])+"d : "+formatNumber(arguments[1])+"h : "+formatNumber(arguments[2])+"m : "+formatNumber(arguments[3])+"s"
	}
	// Otherwise, display a different message
	else { 
		var displaystring = "00d : 00h : 00m : 00s"
	}
	return displaystring
}