<!-- 要实现此效果需要 1 个步骤： -->
<!-- 第 1 步： -->
<!-- 把下面的代码加到<BODY></BODY>区域中： -->
<form name="addresses">
请选择给谁发信<select name="list" onChange="update()">
<option value="mailto:admin@some-site.com">email admin@some-site.com
<option value="mailto:support@some-site.com">email support@some-site.com
<option value="mailto:xiaoqinglu@263.net">email xiaoqinglu@263.net
</select>
<a href="updatelink">发信啦!</a>
</form>
<script language="javascript">
<!-- begin
pos = 9999;
for(num=0;num<document.links.length;num++) {
if (document.links[num].href.indexOf("updatelink") != -1) {
pos = num;
num = 5000;
}
}
function update() {
if (pos!=9999) {
sel = document.addresses.list.selectedIndex;
document.links[pos].href = document.addresses.list[sel].value;
}
}
update();
// end -->
</script>