<SCRIPT language=JavaScript> <!-- var maxtime = 60*60 //一个小时,按秒计算,自己调整! function CountDown(){ if(maxtime>=0){ minutes = Math.floor(maxtime/60); seconds = Math.floor(maxtime%60); msg = "距离结束还有"+minutes+"分"+seconds+"秒"; document.all["timer"].innerHTML=msg; if(maxtime == 5*60) alert('注意,还有5分钟!'); --maxtime; } else{ clearInterval(timer); alert("时间到,结束!"); } } timer = setInterval("CountDown()",1000); //--> </SCRIPT> <div id=timer style="COLOR: red"></div>
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