菜单问题？

Question

你的下拉菜单，定义成隐藏
<div id="Layer1" style="position:absolute; left:8px; top:314px; width:100px; height:156px; z-index:1; visibility: hidden;"> 
  <a href="111.htm"><img src="1.jpg" width="100" height="50" border="0"></a><br>
<a href="222.htm"><img src="2.jpg" width="100" height="50" border="0"></a><br>
<a href="333.htm"><img src="3.jpg" width="100" height="50" border="0"></a></div>你的图片框，移过去
<a href="#" onMouseOver="document.all.Layer1.style.visibility = 'visible';" onMouseOut="document.all.Layer1.style.visibility = 'hidden'"><img src="0.jpg" width="100" height="50"></a>