javascript + 促销倒计时源码 + fixed固定在底部（兼容IE6）
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>无标题文档</title><style>#lefttime3 { background: url(timerbg.jpg) no-repeat left center; width:1018px;height:55px; font-size:40px;line-height: 55px;font-family: MS Yahei,Microsoft YaHei; color: #f00;color:rgb(255,205,1); }#day{ margin-left: 592px;}#hour { margin-left:40px; }#min { margin-left: 39px;}#sec { margin-left: 37px;}</style><script>var djs = function(d,o){ var f = {zero: function(n){var n = parseInt(n, 10);if(n > 0) {if(n <= 9) n = '0' + n;return String(n);} else {return '00';}}, run: function(){ var ts = Math.round((new Date(d).getTime() - new Date().getTime()) / 1000); if(o && ts > 0) { var yy = Math.floor(ts / 31556926); var mm = Math.floor(ts / 2629744); mm = mm > 0 ? mm%12 : '00'; var dd = Math.floor(ts / 86400); dd = dd > 0 ? dd%30 : '00'; var hh = Math.floor(ts / 3600); hh = hh > 0 ? hh%24 : '00'; var ii = Math.floor(ts / 60); ii = ii > 0 ? ii%60 : '00'; var ss = Math.floor(ts % 60); if(o.y) o.y.innerHTML = f.zero(yy); if(o.m) o.m.innerHTML = f.zero(mm); if(o.d) o.d.innerHTML = f.zero(dd); if(o.h) o.h.innerHTML = f.zero(hh); if(o.i) o.i.innerHTML = f.zero(ii); if(o.s) o.s.innerHTML = f.zero(ss); } window.setTimeout(f.run,1000); } } f.run();}function ieFixed(id){ var isIE = (document.all) ? true : false; var isIE6 = isIE && ([/MSIE (\d)\.0/i.exec(navigator.userAgent)][0][1] == 6); var obj = document.getElementById(id).style; if (isIE6 && obj) { obj.position = "absolute"; obj.bottom = "0px"; obj.right = "0px"; var tm = window.setInterval(function(){ obj.marginBottom = "0px"; obj.left = ( document.documentElement.scrollLeft + document.documentElement.clientWidth - 312) + "px"; }, 80); }}</script></head><body style="height:300000px;"> <div id="lll" style="margin:10px;padding:20px; border:solid 2px #DDD; background:#fc6;height:300px;"></div><div id="lefttime3" style="position:fixed;bottom:0px;right:0px;"><span id="day"></span><span id="hour"></span><span id="min"></span><span id="sec"></span></div><script>var d = new Date().getTime() + 3600*24*1000;var d = 1379572933131;var o = { d: document.getElementById('day'), h: document.getElementById('hour'), i: document.getElementById('min'), s: document.getElementById('sec')}djs(d,o);//倒计时ieFixed('lefttime3'); //固定在底部</script></body></html>1）兼容IE6
2）自动倒计时，输入的数字必须是时间，单位毫秒。