这样的日期该如何解决？

<SCRIPT LANGUAGE="javascript" FOR="DateList" EVENT="Change()">
<!--
var n = new Date(DateList.Value);
var y = n.getFullYear();
var m = parseInt(n.getMonth(), 10)+1;
var d = n.getDate();
var ymd = y +"."+ m +"."+ d;
alert(ymd);
window.location.href="printsubmit.asp?datetime="+ ymd;
//DateList.Value="Tue Apr 8 00:00:00 UTC+0800 2003"
//我怎样把这样的日期转换成“2003.04.08”呢？
-->
</SCRIPT>
     <OBJECT ID="DateList" WIDTH=165 HEIGHT=22
     CLASSID="CLSID:20DD1B9E-87C4-11D1-8BE3-0000F8754DA1" style="font-size:9pt;">
        <param name="_ExtentX" value="4366">
        <param name="_ExtentY" value="609">
        <param name="_Version" value="393216">
        <param name="MousePointer" value="0">
        <param name="Enabled" value="1">
        <param name="OLEDropMode" value="0">
        <param name="CalendarBackColor" value="-2147483643">
        <param name="CalendarForeColor" value="-2147483630">
        <param name="CalendarTitleBackColor" value="-2147483647">
        <param name="CalendarTitleForeColor" value="-2147483624">
        <param name="CalendarTrailingForeColor" value="-2147483631">
        <param name="CheckBox" value="0">
        <param name="CustomFormat" value>
        <param name="DateIsNull" value="0">
        <param name="Format" value="662831105">
        <param name="UpDown" value="0">
        <param name="CurrentDate" value="<%=CLng(DateValue(datetime))%>">
        <param name="MaxDate" value="2958465">
        <param name="MinDate" value="-109205">
    </OBJECT>