.mainmenu{
	list-style:none;
	padding:0;
	margin:0 0 5px 0;
	/*height: 30px;*/
	border: 1px solid #000;
	z-index: 9999;
}
.mainmenu li{
	float:left;
	height:20px;
	padding:3px 10px;
	margin:0;
	text-align:center;
	background:#f5f5f5;
	position:relative;
	z-index: 9999;
}
.mainmenu li ul{
	list-style:none;
	padding:0;
	margin:6px 0;
	border: 1px solid blue;
	display:none;
	position:absolute;
	left:0;
	top:20px;
	z-index: 9999;
}
.mainmenu li ul li{
	float:none;
	height:20px;
	margin: 0;
	padding: 2px 5px;
	width:200px;
	text-align:left;
	background:#f5f5f5;
	z-index: 9999;
}
.mainmenu li a{
	display:block;
	height:20px;
	z-index: 9999;
}
.mainmenu li:hover ul {
	display:block;  
}
.mainmenu li:hover {
	background:#e0e0ff;  
}