<script LANGUAGE="JavaScript">
day = new Date();
miVisit = day.getTime();
function clock() {
today = new Date();
hrNow = today.getHours();
mnNow = today.getMinutes(); 
scNow = today.getSeconds();
scNow = today.getSeconds();
miNow = today.getTime();
if (hrNow == 0) {
hour = 12;
ap = " AM";
} else if(hrNow <= 11) {
ap = " AM";
hour = hrNow;
} else if(hrNow == 12) {
ap = " PM";
hour = 12;
} else if (hrNow >= 13) {
hour = (hrNow - 12);
ap = " PM";
}
if (hrNow >= 13) {
hour = hrNow - 12;
}
if (mnNow <= 9) {
min = "0" + mnNow;
}
else (min = mnNow)
if (scNow <= 9) {
secs = "0" + scNow;
} else {
secs = scNow;
}
time = hour + ":" + min + ":" + secs + ap;
document.form.button.value = time;
self.status = time;
setTimeout('clock()', 1000);
}
function timeInfo() {

milliNow = miNow - miVisit;
secsVisit = Math.round((milliNow/1000)%120%60);
minsVisit = Math.round(((milliNow / 1000))/120);
alert("你在本頁面上停留了" + minsVisit + "分 "
+ secsVisit + "秒" );
}
document.write("<center><form name=\"form\">"
+ "<input type=button value=\"Click for info!\""
+ " name=button onClick=\"timeInfo()\"></form></center>");
onError = null;
clock();

</script>