Witam,
mam na stronie dwa skrypty, odliczający czas:

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var javascript_countdown = function () {
	var time_left = 10; 
	var output_element_id = 'javascript_countdown_time';
	var keep_counting = 1;
 
 
	function countdown() {
		if(time_left < 2) {
			keep_counting = 0;
		}
 
		time_left = time_left - 1;
	}
 
	function add_leading_zero(n) {
		if(n.toString().length < 2) {
			return '0' + n;
		} else {
			return n;
		}
	}
 
	function format_output() {
		var hours, minutes, seconds;
		seconds = time_left % 60;
		minutes = Math.floor(time_left / 60) % 60;
		hours = Math.floor(time_left / 3600);
 
		seconds = add_leading_zero( seconds );
		minutes = add_leading_zero( minutes );
		hours = add_leading_zero( hours );
 
		return hours + ':' + minutes + ':' + seconds;
	}
 
	function show_time_left() {
		document.getElementById(output_element_id).innerHTML = format_output();//time_left;
	}
 
	function no_time_left() {
		document.getElementById(output_element_id).innerHTML = no_time_left_message;
	}
 
	return {
		count: function () {
			countdown();
			show_time_left();
		},
		timer: function () {
			javascript_countdown.count();
 
			if(keep_counting) {
				setTimeout("javascript_countdown.timer();", 1000);
			} else {
				no_time_left();
			}
		},
		setTimeLeft: function (t) {
			time_left = t;
			if(keep_counting == 0) {
				javascript_countdown.timer();
			}
		},
		init: function (t, element_id) {
			time_left = t;
			output_element_id = element_id;
			javascript_countdown.timer();
		}
	};
}();
 
javascript_countdown.init(1200, 'javascript_countdown_time');
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i pasek postępu:

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function zxcAnimate(mde,obj,srt){
 this.to=null;
 this.obj=typeof(obj)=='object'?obj:document.getElementById(obj);
 this.mde=mde.replace(/\W/g,'');
 this.data=[srt||0];
 return this;
}
 
zxcAnimate.prototype.animate=function(srt,fin,ms,scale,c){
 clearTimeout(this.to);
 this.time=ms||this.time||0;
 this.neg=srt<0||fin<0;
 this.data=[srt,srt,fin];
 this.mS=this.time*(!scale?1:Math.abs((fin-srt)/(scale[1]-scale[0])));
 this.c=typeof(c)=='string'?c.charAt(0).toLowerCase():this.c?this.c:'';
 this.inc=Math.PI/(2*this.mS);
 this.srttime=new Date().getTime();
 this.cng();
}
 
zxcAnimate.prototype.cng=function(){
 var oop=this,ms=new Date().getTime()-this.srttime;
 this.data[0]=(this.c=='s')?(this.data[2]-this.data[1])*Math.sin(this.inc*ms)+this.data[1]:(this.c=='c')?this.data[2]-(this.data[2]-this.data[1])*Math.cos(this.inc*ms):(this.data[2]-this.data[1])/this.mS*ms+this.data[1];
 this.apply();
 if (ms<this.mS) this.to=setTimeout(function(){oop.cng()},10);
 else {
  this.data[0]=this.data[2];
  this.apply();
  if (this.Complete) this.Complete(this);
 }
}
 
zxcAnimate.prototype.apply=function(){
 if (isFinite(this.data[0])){
  if (this.data[0]<0&&!this.neg) this.data[0]=0;
  if (this.mde!='opacity') this.obj.style[this.mde]=Math.floor(this.data[0])+'px';
  else zxcOpacity(this.obj,this.data[0]);
 }
}
 
function zxcOpacity(obj,opc){
 if (opc<0||opc>100) return;
 obj.style.filter='alpha(opacity='+opc+')';
 obj.style.opacity=obj.style.MozOpacity=obj.style.WebkitOpacity=obj.style.KhtmlOpacity=opc/100-.001;
}
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function Bar(o){
 var obj=document.getElementById(o.ID);
 this.oop=new zxcAnimate('width',obj,0);
 this.max=obj.parentNode.offsetWidth;
 this.to=null;
}
 
Bar.prototype={
 
 Start:function(sec){
  clearTimeout(this.to);
  this.oop.animate(0,this.max,sec*1000);
  this.srt=new Date();
  this.sec=sec;
  this.Time();
 },
 
 Time:function(sec){
  var oop=this,sec=this.sec-Math.floor((new Date()-this.srt)/1000);
 
  if (sec>0){
   this.to=setTimeout(function(){ oop.Time(); },1000);
  }
 }
 
}
 
var B1=new Bar({
 ID:'bar'
});
 
B1.Start(1200);
[JAVASCRIPT] pobierz, plaintext 

Obydwa skrypty odliczają 20 min. Problem pojawia się w Operze - pasek postępu kończy 11 sekund za wcześnie lub licznik za wolno (?). W innych przeglądarkach są zsynchronizowane. Jeżeli istnieje jakieś rozwiązanie tego problemu, to byłbym bardzo wdzięczny za każdą wskazówkę.

//edit
Problem rozwiązany.