模似windows XP 左侧的菜单效果(1)

<style type="text/css">
 
.mainDiv
{
  width:160px;
}
.topItem
{
  width:160px;
  height:22px;
  cursor:pointer;
  background: #467BF2;
  text-decoration: none;
  color: white;
  font-weight:bold;
  font-family:"GOTHIC";
 
}

.dropMenu
{
  background:#D9D9D9;
  border-top:1px solid #467BF2;
  border-left:1px solid #92B1F8;
  border-right:1px solid #92B1F8;
  border-bottom:1px solid #92B1F8;
}

.subMenu
{
   display:none;
}
.subItem
{
   padding-left:5px;
   cursor:pointer;
   font-weight:bold;
   text-decoration:none;
   color:black;
}

.subItem a
{
   text-decoration:none;
   color:black;
}

.subItemOver
{
   cursor:pointer;
   color:blue;
   text-decoration:underline;
   font-weight:bold;
   padding-left:5px;
}

.subItemOver  a
{
   color:blue;
}

.drop
{
   border-left:1px solid black;
   border-right:1px solid black; 
}
</style>