在
<body> 与 </body> 之间加入：
<script language="JavaScript">
<!-- Begin
function AddDays(form) {
DaysToAdd=document.form.DaysToAdd.value;
var now=new Date();
var newdate=new Date();
var newtimems=newdate.getTime()+(DaysToAdd*24*60*60*1000);
newdate.setTime(newtimems);
document.form.display.value=newdate.toLocaleString();
}
// End -->
</script>
<form name=form>
<input type=text name=DaysToAdd size=4 value=10 onFocus="this.select()"
onMouseOver="this.focus()">
<input type=button value="天后的日期将是.." onClick="AddDays(this.form)"
name="button">
<input type=text name="display" size=20 value="">
</form>
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