function time() {
//東京とシカゴの時間を表示	
dd = new Date();
tz_tokyo = -9
tz_newyork = 5
jisa = tz_newyork - tz_tokyo
document.f1.t1.value = dd.toLocaleString(); 
d2=new Date()
d2.setTime(dd.getTime()-jisa*3600*1000)
document.f1.t2.value = d2.toLocaleString();
window.setTimeout("time()", 1000);
}