var timersArray=new Array();
function log(str) {
	return;
	logElement=document.getElementById("log");
	if (logElement==null) return;
	logElement.innerHTML+=str+"<br>\n";
}
function timerUpdate(element, deadline){
	var today=new Date();
	//Calculate difference btw the two dates, and convert to days
//	log("timerUpdate messageAfter:"+element.messageAfter);
	var one_day=1000*60*60*24;
	var one_hour=1000*60*60;
	var one_minute=1000*60;
	var one_second=1000;
	var ms=deadline.getTime()-today.getTime()-today.getTimezoneOffset()*one_minute;
	var delta=ms;
	log("timerUpdate: deltaMs="+ms);
//	log("getTimezoneOffset(): "+ today.getTimezoneOffset()/60);
	if (ms < 0 ) {ms=-ms;}
	var days=Math.floor(ms/one_day);
	ms-=days*one_day;
	var hours=Math.floor(ms/one_hour);
	ms-=hours*one_hour;
	var minutes=Math.floor(ms/one_minute);
	ms-=minutes*one_minute;
	var seconds=Math.floor(ms/one_second);

	var dayUnit="дней";
	if (days%10==1 && days != 11) dayUnit="день";
	if (days%10>1 && days%10<5 && !(days>=11 && days<=14) ) dayUnit="дня";
	
	var hourUnit="часов";
	if (hours%10==1 && hours != 11) hourUnit="час";
	if (hours%10>1 && hours%10 < 5 && !(hours>=11 && hours<=14) ) hourUnit="часа";

	var minuteUnit="минут";
	if (minutes%10==1 && minutes != 11) minuteUnit="минуту";
	if (minutes%10>1 && minutes%10<5 && !(minutes>=11 && minutes<=14)  ) minuteUnit="минуты";

	var secondUnit="секунд";
	if (seconds%10==1 && seconds != 11) secondUnit="секунду";
	if (seconds%10>1 && seconds%10<5 && !(seconds>=11 && seconds<=14) ) secondUnit="секунды";
	
	if (days==0) {
		timerString=hours+" "+hourUnit+" "+minutes+" "+minuteUnit+" "+seconds+" "+secondUnit;
	} else {
		timerString=days+" "+dayUnit+" "+hours+" "+hourUnit;
	}
	var message="";
	if (delta > 0) {
		message=element.messageBefore;
	} else {
		message=element.messageAfter;
	}
	message=message.replace("%TIME_LEFT%", timerString);
	element.innerHTML=message;
	return delta;
}

function refreshTimers() {
	var timeout=10000;
	for (timerIndex in timersArray) {
		if (Math.abs(timerUpdate(timersArray[timerIndex], timersArray[timerIndex].deadline)) < 1000*60*60*24 ) 
{
			timeout=1000;
		}
	}
	setTimeout(refreshTimers, timeout);
}
function registerTimer(element) {
	if (element.deadline!=null) {
		timersArray.push(element);
	} else {
		log("registerTimer failed");
	}
	refreshTimers();
}