남은시간 카운트하는 자바스크립트

<SCRIPT language=JavaScript> 

function getTime() { 

now = new Date(); 

dday = new Date(2013,02,14,18,00,00); 

// 원하는 날짜, 시간 정확하게 초단위까지 기입.

days = (dday - now) / 1000 / 60 / 60 / 24; 

daysRound = Math.floor(days); 

hours = (dday - now) / 1000 / 60 / 60 - (24 * daysRound); 

hoursRound = Math.floor(hours); 

minutes = (dday - now) / 1000 /60 - (24 * 60 * daysRound) - (60 * hoursRound); 

minutesRound = Math.floor(minutes); 

seconds = (dday - now) / 1000 - (24 * 60 * 60 * daysRound) - (60 * 60 * hoursRound) - (60 * minutesRound); 

secondsRound = Math.round(seconds); 

document.getElementById("counter1").innerHTML = hoursRound; 

document.getElementById("counter2").innerHTML = minutesRound; 

document.getElementById("counter3").innerHTML = secondsRound; 

newtime = window.setTimeout("getTime();", 1000); 

} 

</SCRIPT>

<STYLE type=text/css>

/*타임*/

#count {

 height: 167px;

 color: #000;

 padding-left: 100px;

 padding-top:130px;

 background-image: url(http://www.bb.co.kr/data/201302/IJ13607483252985/12.jpg);

 background-repeat: no-repeat;

}

#bt {

 height: 16px;

 width: 49;

 padding-left: 100px;

 padding-top: 0px;

}

</STYLE>

<TABLE cellSpacing=0 cellPadding=0>

<TBODY>

<TR>

<TD height=167 width=256>

<DIV id=count><SPAN style="FONT: bold 12px Gulim; COLOR: #000" id=counter1></SPAN><FONT style="FONT-FAMILY: '굴림'; size: 7px">시간</FONT> <SPAN style="FONT: bold 12px Gulim; COLOR: #000" id=counter2></SPAN><FONT style="FONT-FAMILY: '굴림'; size: 7px">분</FONT> <SPAN style="FONT: bold 12px Gulim; COLOR: #000" id=counter3></SPAN><FONT style="FONT-FAMILY: '굴림'; size: 7px">초 남음</FONT>

<SPAN style="padding-left:30px;"></SPAN></div>

</TD></TR></TBODY></TABLE>

<SCRIPT>getTime()</SCRIPT>