js时间倒计时 (二)

<input name="settime" type="hidden" id="settime" value="3" />
<div id="timer" class="day">计算中…</div>

<script type="text/javascript">
if (document.images){
parselimit=document.getElementById("settime").value;//剩余总秒数
parselimit=parselimit*60;
}
function beginrefresh(){
if (!document.images)
return;
if (parselimit<1){
document.getElementById("timer").innerHTML="<font color='#ff0000'>时间到</font>";
}
else{

parselimit-=1
curday=Math.floor(parselimit/60/60/24);
curhour=Math.floor(parselimit/60/60);
curmin=Math.floor(parselimit/60);
curhour=curhour%24;
curmin=curmin%60;
cursec=parselimit%60;
//window.status=curtime;
document.getElementById("timer").innerHTML="<b>"+curday+"</b>天<b>"+curhour+"</b>小时<b>"+curmin+"</b>分<b>"+cursec+"</b>秒";
setTimeout("beginrefresh()",1000);
}
}
window.onload=beginrefresh;
</script>