/*****************************************************************************
	Countdown timer in javascript
	Copyright Aarron Shaughnessy 2006
******************************************************************************/

var RaceDates = [
["Snetterton", "September, 13 2008 0:0:00"],
["Snetterton", "September, 13 2008 0:0:00"],
["Snetterton", "September, 14 2008 0:0:00"],
["Snetterton", "September, 14 2008 0:0:00"],
["Brands Hatch (GP)", "September, 27 2008 0:0:00"],
["Brands Hatch (GP)", "September, 27 2008 0:0:00"],
["Brands Hatch (GP)", "September, 28 2008 0:0:00"],
["Brands Hatch (GP)", "September, 28 2008 0:0:00"]
];

function cdtime(container){
	if (!document.getElementById || !document.getElementById(container)) 
		return;
	this.container=document.getElementById(container);

	if(RaceDates.length <= 0) {
		this.timesup = true;
	} else {
		this.findnextrace();
	}
	this.showresults();
}

cdtime.prototype.showresults=function(){
	this.currentTime = new Date();	
	var thisobj=this
	var timediff=(this.targetdate-this.currentTime)/1000 //difference btw target date and current date, in seconds

	if(this.timesup == true) {
		this.container.innerHTML="<span class='racetrack'>Awaiting new calander</span>";
		return;
	}

	if ((timediff<0)){ //if time is up
		if (timediff > -60/*-43200*/){ //if time is today
			this.container.innerHTML="<span class='racedate'>Today </span><span class='racetrack'> at " + RaceDates[this.RaceIndex][0] + "</span>";
		} else {
			this.findnextrace();
		}
		setTimeout(function(){thisobj.showresults()}, 1000); //update results every second
		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 oneWeek=60*60*24*7 //week unit in seconds
	var weekfield=Math.floor(timediff/oneWeek)
	var dayfield=Math.floor((timediff-weekfield*oneWeek)/oneDay)
	var hourfield=Math.floor((timediff-weekfield*oneWeek-dayfield*oneDay)/oneHour)
	var minutefield=Math.floor((timediff-weekfield*oneWeek-dayfield*oneDay-hourfield*oneHour)/oneMinute)
	var secondfield=Math.floor((timediff-weekfield*oneWeek-dayfield*oneDay-hourfield*oneHour-minutefield*oneMinute))

	this.container.innerHTML="<span class='racetrack'>" + RaceDates[this.RaceIndex][0] + "<span> <span class='racedate'>on " + this.targetdate.toDateString() + "</span><span class='countdown'> in "+weekfield+"wks "+dayfield+"days "+hourfield+"hrs "+minutefield+"min "+secondfield+"sec </span>";
	setTimeout(function(){thisobj.showresults()}, 1000) //update results every second
}

cdtime.prototype.findnextrace=function() {
	var currentTime = new Date();
	
	this.timesup = false;
	this.targetdate = new Date();
	this.RaceIndex = 0;
	this.targetdate.setTime(Date.parse(RaceDates[this.RaceIndex][1]));
	
	while (((this.targetdate-currentTime)/1000) < -60/*43200*/) { 	
		this.RaceIndex++;
		if (this.RaceIndex >= RaceDates.length) {
			this.timesup = true;
			return;
		}
		this.targetdate.setTime(Date.parse(RaceDates[this.RaceIndex][1]));
	}
}

function countdown_init(){
	var futuredate=new cdtime("countdowncontainer");
}

addLoadEvent(countdown_init);