function show_date_time(){
window.setTimeout("show_date_time()", 1000);
BirthDay=new Date("05-02-2010");//这个日期是可以修改的
today=new Date();
timeold=(BirthDay.getTime()-today.getTime());
sectimeold=timeold/1000
secondsold=Math.floor(sectimeold);
msPerDay=24*60*60*1000
e_daysold=timeold/msPerDay
daysold=Math.floor(e_daysold);
e_hrsold=(e_daysold-daysold)*24;
hrsold=Math.floor(e_hrsold);
e_minsold=(e_hrsold-hrsold)*60;
minsold=Math.floor((e_hrsold-hrsold)*60);
seconds=Math.floor((e_minsold-minsold)*60);
span_dt_dt.innerHTML="<b><font id=a1 color=#ff0000 face=黑体 size=7>"+daysold+"天"+hrsold+"小时"+minsold+"分"+seconds+"秒"+"</b><br></font>" ;

}

show_date_time();

//-->
</SCRIPT>

<STYLE>.time {
 BEHAVIOR: url(#default#time2)
filter: /*ALE*/ }
</STYLE>