请问js 秒，怎么转换成时分秒（00:00:00）

[liweiwuxin]

<script language=javascript>
var TIME_SET=0;
var timer=0;
function window.onload()
{
TIME_SET=parseInt(document.all.lim.value*60*1000,10);
timer=TIME_SET;
setInterval("checktime()",1000);
}
function checktime()
{
timer -= 1000;
if(timer>=0){
//问题在这
//步骤一、3500/3600 商0余3500
//步骤二、3500/60 商58余2
//正确结果：00：58：02
//问题后面四行代码怎么不对啊
var h=Math.floor(timer/3600);
var h1=timer%3600;
var m=Math.floor(h1/60);
var m1=h1%60;


document.all.show.innerHTML=h.toString()+":"+m.toString()+":"+m1.toString()+":";
document.all.show.style.color="#0000A0";
}else{
document.all.show.innerHTML="时间到!";
document.all.show.style.color="#ff0000";
formname.sbBtn.click();
}
}
</script>



<font id="show"></font>
<input type="hidden" id="lim" value="<%=time %>">

[fengsky491]

加判断啊。
给你发个，自己参考

function Year_Month(){
			    var now = new Date(); 
			    var yy = now.getYear(); 
			    var mm = now.getMonth(); 
				var mmm=new Array();
				mmm[0]="01";
				mmm[1]="02 ";
				mmm[2]="03";
				mmm[3]="04";
				mmm[4]="05";
				mmm[5]="06";
				mmm[6]="07";
				mmm[7]="08";
				mmm[8]="09";
				mmm[9]="10";
				mmm[10]="11";
				mmm[11]="12";
				mm=mmm[mm];
			    return(mm );
				}
			function thisYear(){
			    var now = new Date(); 
			    var yy = now.getYear(); 
			    return(yy );
				}
			 function Date_of_Today(){
			    var now = new Date(); 
			    var tt = now.getDate();
			    if (tt < 10) 
			        tt = '0' + tt; 
			    return(tt );
			    //return(now.getDate() );
				}
			 function CurentTime(){
			    var now = new Date(); 
			    var hh = now.getHours(); 
			    var mm = now.getMinutes(); 
			    var ss = now.getTime() % 60000; 
			    ss = (ss - (ss % 1000)) / 1000; 
			    var clock = hh+':'; 
			    if (mm < 10) clock += '0'; 
			    clock += mm+':'; 
			    if (ss < 10) clock += '0'; 
			    clock += ss; 
			    return(clock);
				} 
			function refreshCalendarClock(){
			document.all.calendarClock1.innerHTML = thisYear()+"/";
			document.all.calendarClock2.innerHTML = Year_Month()+"/"; 
			document.all.calendarClock3.innerHTML = Date_of_Today();
			document.all.calendarClock4.innerHTML = CurentTime(); }
			document.write('<font id="calendarClock1" > </font>');
			document.write('<font id="calendarClock2" > </font>');
			document.write('<font id="calendarClock3" > </font> ');
			document.write('<font id="calendarClock4" > </font>');
			setInterval('refreshCalendarClock()',1000);