ecshop首页今日特价促销商品怎么增加促销倒计时效

$goods[$idx]['url'] =build_uri('goods', array('gid' => $row['goods_id']),$row['goods_name']);

$time = gmtime();
if ($time >= $row['promote_start_date']&& $time <=$row['promote_end_date'])
{
$goods[$idx]['gmt_end_time'] = local_date('M d, YH:i:s',$row['promote_end_date']);
}
else
{
$goods[$idx]['gmt_end_time'] = 0;
}

<meta http-equiv="Content-Type"content="text/html; charset=utf-8">
<!-- {if $promotion_goods} -->
<script >
var Tday = new Array();
var daysms = 24 * 60 * 60 * 1000
var hoursms = 60 * 60 * 1000
var Secondms = 60 * 1000
var microsecond = 1000
var DifferHour = -1
var DifferMinute = -1
var DifferSecond = -1
function clock(key)
{
var time = new Date()
var hour =time.getHours()
var minute =time.getMinutes()
var second =time.getSeconds()
var timevalue = ""+((hour> 12) ? hour-12:hour)
timevalue +=((minute< 10) ? ":0":":")+minute
timevalue +=((second< 10) ? ":0":":")+second
timevalue +=((hour>12 ) ? " PM":" AM")
var convertHour =DifferHour
var convertMinute =DifferMinute
var convertSecond =DifferSecond
var Diffms =Tday[key].getTime() - time.getTime()
DifferHour = Math.floor(Diffms/ daysms)
Diffms -= DifferHour *daysms
DifferMinute =Math.floor(Diffms / hoursms)
Diffms -= DifferMinute *hoursms
DifferSecond =Math.floor(Diffms / Secondms)
Diffms -= DifferSecond *Secondms
var dSecs = Math.floor(Diffms/ microsecond)
if(convertHour != DifferHour)a="剩余:<fontcolor=red>"+DifferHour+"</font>天";
if(convertMinute !=DifferMinute) b="<fontcolor=red>"+DifferMinute+"</font>时";
if(convertSecond !=DifferSecond) c="<fontcolor=red>"+DifferSecond+"</font>分"
d="<fontcolor=red>"+dSecs+"</font>秒"
if (DifferHour>0) {a=a}
else {a=''}
document.getElementByIdx_x("leftTime"+key).innerHTML = a + b + c + d;//显示倒计时信息
}
</script>
<div id="sales" class="f_lclearfix">
<h1><ahref="../search.php?intro=promotion"><imgsrc="images/more.gif"/></a></h1>
<div class="clearfix goodBox">
<!--{foreach from=$promotion_goods key=keyitem=goods name="promotion_foreach"}-->
{if $smarty.foreach.promotion_foreach.index <=3}
<div class="goodList">
<ahref="{$goods.url}"><imgsrc="{$goods.thumb}" border="0"alt="{$goods.name|escape:html}"/></a><br/>
<p><ahref="{$goods.url}"title="{$goods.name|escape:html}">{$goods.short_name|escape:html}</a></p>
{$lang.promote_price}<fontclass="f1">{$goods.promote_price}</font><br><fontclass="f4"id="leftTime{$key}">{$lang.please_waiting}</font>
</div>
{/if}
<script>
Tday[{$key}] = newDate("{$goods.gmt_end_time}");
window.setInterval(function()
{clock({$key});},1000);
</script>
<!--{/foreach}-->
</div>
</div>
<!-- {/if} -->