纯JS 倒计时

//改成你的计时日期，格式为MM-DD-YYYY

showtime("10-08-2014");

function showtime(tian){
window.setTimeout("showtime('"+tian+"')", 10000);
BirthDay=new Date(tian);
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=daysold+"天"+hrsold+"小时"+minsold+"分"+seconds+"秒" ;
//document.getElementById("djs").innerHTML=daysold;
djs.innerHTML=daysold;//对应的项目
}