function timer(v){
GMT = v;
var week = new Array("日","月","火","水","木","金","土");
var gmt = new Date();
var now = new Date();
var set = now.getTimezoneOffset();
gmt.setTime(now.getTime()+(set/60+parseFloat(GMT))*60*60*1000);
Mon = gmt.getMonth() + 1;
Wee = week[gmt.getDay()];
Dat = gmt.getDate();
hor = gmt.getHours();	if(hor < 10)hor = "0" + hor;
min = gmt.getMinutes();	if(min < 10)min = "0" + min;
sec = gmt.getSeconds();	if(sec < 10)sec = "0" + sec;
document.W_clock.W_text.value = "現在コロラド州デンバーは "+Mon+"月"+Dat+"日"+" ["+Wee+"] "+hor+"時"+min+"分"+sec+"秒（冬時間）";
setTimeout("timer(GMT)",999);
}