<script type="text/javascript"><!--
function getpet() {
var toyear = 1997;
var birthyear = document.getElementById("inyear").value;
x = (toyear - birthyear) % 12
if ((x == 1) || (x == -11)) {birthpet="鼠"}
else if (x == 0) {birthpet="牛"}
else if ((x == 11) || (x == -1)) {birthpet="虎"}
else if ((x == 10) || (x == -2)) {birthpet="兔"}
else if ((x == 9) || (x == -3)) {birthpet="龍"}
else if ((x == 8) || (x == -4)) {birthpet="蛇"}
else if ((x == 7) || (x == -5)) {birthpet="馬"}
else if ((x == 6) || (x == -6)) {birthpet="羊"}
else if ((x == 5) || (x == -7)) {birthpet="猴"}
else if ((x == 4) || (x == -8)) {birthpet="雞"}
else if ((x == 3) || (x == -9)) {birthpet="狗"}
else if ((x == 2) || (x == -10)) {birthpet="豬"}
else {birthpet="輸入錯誤"}
document.getElementById("birth").innerHTML = birthpet;}
// --></script>
出生年份：<input type="text" size="5" id="inyear" />
<input type="button" value="開始" onclick="getpet()" />
生肖是：<span id="birth"></span>

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