.showOrHidden
{
	border-style:solid;
	border:1px solid #B0B0B0;
	border-top:none;
	width:78px;
	position:absolute;
	display: none;
	z-index: 999;	/*该元素将叠加在比它小的元素上面*/
	background-color: white;
	margin-top:-4.5px;
	margin-top:-6px\9;
	_margin-top:-7px;
	padding-top:0px;
	padding-bottom:4px;
}
.item
{
	cursor: pointer;
	color: black;
	text-align:center;
	margin-top:8px;
}
.item:hover
{
	background-color: #B0C4DE;
}
.mainItem
{
	width:95px;
	cursor:pointer;
	margin-bottom:0px;
	padding-bottom:0px;
}
.mainItem:hover
{
	color:#0000FF;
}