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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>浮动倒计时公告</title>
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<style type="text/css">
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/*网页高度*/
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body{ height:3000px;}
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div,ul,li,body{margin:0; padding:0;}
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/*position:absolute;用于元素的定位*/
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#roll{ background:url(/images/f_notice.jpg) 0 0 no-repeat;width:140px; height:217px; position:absolute;}
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.timemsg{ margin-left:26px; margin-top:114px;color:#c02b2b; font-size:16px; font-weight:bold;}
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</style>
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</head>
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<body>
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<div id="roll">
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<div class="timemsg">
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<!-- <span id="t_d">00:</span> -->
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<span id="t_h">00:</span>
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<span id="t_m">00:</span>
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<span id="t_s">00</span>
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</div>
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</div>
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</body>
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</html>
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<script type="text/javascript">
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function getRTime(){
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var EndTime= new Date('2014/12/31 12:30:00'); //截止时间
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var NowTime = new Date();
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var t =EndTime.getTime() - NowTime.getTime();
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// var d=Math.floor(t/1000/60/60/24);
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var h=Math.floor(t/1000/60/60%24);
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var m=Math.floor(t/1000/60%60);
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var s=Math.floor(t/1000%60);
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// document.getElementById("t_d").innerHTML = d + ":";
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document.getElementById("t_h").innerHTML = h + ":";
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document.getElementById("t_m").innerHTML = m + ":";
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document.getElementById("t_s").innerHTML = s ;
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}
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setInterval(getRTime,1000);
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</script>
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<script>
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var roll=document.getElementById('roll'),
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initX=0,
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initY,
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compY,
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sp=15,
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//可调整时间间隔，步进值不宜过大，不然IE下有点闪屏；
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timeGap=5,
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doc=document.documentElement,
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docBody=document.body;
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compY=initY=100;
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roll.style.right=initX+"px";
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;(function(){
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var curScrollTop=(doc.scrollTop||docBody.scrollTop||0)-(doc.clientTop||docBody.clientTop||0);
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//每次comP的值都不一样；直到roll.style.top===doc.scrollTop+initY；
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compY+=(curScrollTop+initY-compY)/sp;
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roll.style.top=Math.ceil(compY)+"px";
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setTimeout(arguments.callee,timeGap);
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})();
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</script>
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