<img src=../images/menu_study.gif onmouseover=ariesra.style.visibility='visible'>
<div id="ariesra" style="width:0px; height:4127px; position:absolute; left:5px; top:5px; z-index:1;

visibility:hidden;" onmousedown=this.style.visibility='hidden'>
        <table border=0 width=150 cellspacing=1 cellpadding=3 bgcolor=black height=250 style="filter:

Alpha(Opacity=55);">
        <tr>
                <td bgcolor=white style=line-height:160% valign=top>
                        ariesra..는..
                        <table border=0 cellspacing=0 cellpadding=3>
                        <tr>
                                <td style=line-height:160% >
sssss
                                </td>
                        </tr>
                        </table>
                        <table border=0 cellspacing=0 cellpadding=3 bgcolor=efefef>
                        <tr>
                                <td style=line-height:160% >
                                </td>
                        </tr>
                        </table>
                </td>
        </tr>
        </table>
</div>
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이런식으로 된 소스인데요 지금 상태에선 클릭해야만 창이 없어집니다
이걸 마우스아웃해서 없어지게 하려면 어디부분을 손봐줘야 하나요?