<script>
<!--
var muCnt   = 3;
var aryLt   = new Array();
aryLt[0]    = 10;
aryLt[1]    = 210;
aryLt[2]    = 410;

function fncShow( pos )
{
    var i   =0;
    var dv = document.getElementById("sub");
    dv.style.display    = '';

    for( i; i<muCnt; i++ )
    {
        var obj = document.getElementById("menu"+i);

        if( i == pos )
        {
            obj.style.display   = '';
        }
        else
        {
            obj.style.display                               = 'none';
        }
    }

  
    dv.style.left   = aryLt[pos];
}

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

    var dv = document.getElementById("sub");
    dv.style.display    = 'none';
}

//-->
</script>
<table cellpadding='0' cellspacing='1' border='1' width='600' height='60'>
    <tr height='30'>
        <td width='200' onmouseover='javascript:fncShow(0);'><a href="">Home</a></td>
        <td width='200' onmouseover='javascript:fncShow(1);'>BBS</td>
        <td width='200' onmouseover='javascript:fncShow(2);'>Download</td>
    </tr>
</table>

<div id='sub' style='position:absolute; left:11px; top:73px; background-color:gray; width:200; padding:1px; display:none;'>

    <div id='menu0' style='background-color:#FFFFFF; display:none;' cellpadding='0' cellspacing='0' border='0' width='300' height='30' bgcolor='#FFFFFF' onmouseout='javascript:fncHide(0);'>
        <span style='width:100%; height:100%;'>
            AAA-1<br>
            AAA-2<br>
            AAA-3
         </span>
    </div>

    <div id='menu1' style='background-color:#FFFFFF; display:none;' cellpadding='0' cellspacing='0' border='0' width='200' height='30' bgcolor='#FFFFFF' onmouseout='javascript:fncHide(1);'>
        <span style='width:100%; height:100%;'>
            BBB-1<br>
            BBB-2<br>
            BBB-3
         </span>
    </div>

    <div id='menu2' style='background-color:#FFFFFF; display:none;' cellpadding='0' cellspacing='0' border='0' width='200' height='30' bgcolor='#FFFFFF' onmouseout='javascript:fncHide(2);'>
        <span style='width:100%; height:100%;'>
            CCC-1<br>
            CCC-2<br>
            CCC-3
         </span>
    </div>

</div>