이미지 보시면 ㅠㅠ
작동은 잘되는데 하단에 자바스크립트 에러가떠용 ㅠㅠ
왜 에러가 뜨는건가용 ㅠㅠ

소스 입니당.
php mysql 만 가지고 놀다보니 자바스크립트을 안배워서.. 골치가 아푸네용 ㅠㅠ

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<div id="top">
<li id='mmu0' class='mmu0' onmouseover='javascript:fncShow(0);'><a href="">Menu A</a></li>
<li id='mmu1' class='mmu0' onmouseover='javascript:fncShow(1);'><a href="">Menu B</a></li>
<li id='mmu2' class='mmu0' onmouseover='javascript:fncShow(2);'><a href="">Menu C</a></li>
<li id='mmu3' class='mmu0' onmouseover='javascript:fncShow(3);'><a href="">Menu D</a></li>
<li id='mmu4' class='mmu0' onmouseover='javascript:fncShow(4);'><a href="">Menu E</a></li>
<li id='mmu5' class='mmu0' onmouseover='javascript:fncShow(5);'><a href="">Menu F</a></li>
<li id='mmu6' class='mmu0' onmouseover='javascript:fncShow(6);'><a href="">Menu G</a></li>
<li id='mmu7' class='mmu0' onmouseover='javascript:fncShow(7);'><a href="">Menu H</a></li>
<li id='mmu8' class='mmu0' onmouseover='javascript:fncShow(8);'><a href="">Menu I</a></li>
</div>

<div id="sub">
<li id='mu0' class=mu0 style='display:none;'><a href="">AAA-0</a></li>
<li id='mu1' class=mu0 style='display:none;'><a href="">AAA-1</a></li>
<li id='mu2' class=mu0 style='display:none;'><a href="">AAA-2</a></li>
<li id='mu3' class=mu0 style='display:none;'><a href="">AAA-3</a></li>
<li id='mu4' class=mu0 style='display:none;'><a href="">AAA-4</a></li>
<li id='mu5' class=mu0 style='display:none;'><a href="">AAA-5</a></li>
<li id='mu6' class=mu0 style='display:none;'><a href="">AAA-6</a></li>
<li id='mu7' class=mu0 style='display:none;'><a href="">AAA-7</a></li>
<li id='mu8' class=mu0 style='display:none;'><a href="">AAA-8</a></li>
</div>

<script>
<!--
var muCnt = 10;

function fncShow( pos )
{
 var i =0;
 for( i; i<muCnt; i++ )
 {
  var obj = document.getElementById('mu'+i);

  if( i == pos )
  {
  var mobj = document.getElementById('mmu'+i);
  obj.style.display = '';
  }
  else
  {
  obj.style.display = 'none';
  }
 }
}

function fncHide( pos )
{
 var obj = document.getElementById("mu"+pos);
 obj.style.display = 'none';
}

//-->
</script>