<SCRIPT LANGUAGE="JavaScript">
function CheckUIElements() {
  var yMenu1From, yMenu1To, yOffset, timeoutNextCheck;
  var wndWidth = parseInt(document.body.clientWidth);
  yMenu1From   = parseInt (daerewLayer.style.top, 10);
  yMenu1To     = document.body.scrollTop + 200; // 위쪽 위치
  timeoutNextCheck = 500;

  if ( yMenu1From != yMenu1To ) {
    yOffset = Math.ceil( Math.abs( yMenu1To - yMenu1From ) / 20 );
    if ( yMenu1To < yMenu1From )
      yOffset = -yOffset;

    daerewLayer.style.top = parseInt (daerewLayer.style.top, 10) + yOffset;

    timeoutNextCheck = 10;
  }
  daerewLayer.style.left = (document.body.clientWidth/2)+440;



  setTimeout ("CheckUIElements()", timeoutNextCheck);
}

function MovePosition() {
  var wndWidth = parseInt(document.body.clientWidth);

  // 페에지 로딩시 포지션
  daerewLayer.style.top = 200;
  daerewLayer.style.left = (document.body.clientWidth/2)+440;
  daerewLayer.style.visibility = "visible";

  // initializing UI update timer
  CheckUIElements();
  return true;
}
</SCRIPT>

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<div style="position:absolute;top:200px;left:expression( (document.body.clientWidth/2)+440);z-index:2;" id="daerewLayer" name="daerewLayer">  
<table width="50" height="100" border="0">  
    <tr>  
        <td style="background-color:#2c2c2c; padding:5px; text-align:center;"><span style="color:white">내용</span></td>  
    </tr>  
</table>  
</div>  

<script language='JavaScript'>MovePosition();</script>