// JavaScript Document
function show_date_time()
{
    var BirthDay=new Date("2/10/2005");
    var today=new Date();
    var timeold=(today.getTime()-BirthDay.getTime());
    var sectimeold=timeold/1000;
    var secondsold=Math.floor(sectimeold);
    var msPerDay=24*60*60*1000;
    var e_daysold=timeold/msPerDay;
    var daysold=Math.floor(e_daysold);
    var e_hrsold=(daysold-e_daysold)*-24;
    var hrsold=Math.floor(e_hrsold);
    var e_minsold=(hrsold-e_hrsold)*-60;
    var minsold=Math.floor((hrsold-e_hrsold)*-60);
    var seconds=Math.floor((minsold-e_minsold)*-60);
    document.getElementById("span_dt_dt").innerHTML=daysold+"天"+hrsold+"小时"+minsold+"分"+seconds+"秒" ;
    getshowdate();
}
function getshowdate()
{
      window.setTimeout("show_date_time()", 1000); 
}