#tool{
	position:absolute;
	display:none;
	margin-top:160px;
}
#tool .middle{
	background-color:#F4F4F4;
	border:1px solid #d1d1d1;
	width:200px;
	margin-bottom:1px;
}
#tool .bubble_middle div{
	position:relative;
	font-family: Trebuchet MS, Lucida Sans Unicode, Arial, sans-serif;
	font-size:12px;
	line-height:20px;
	text-align:center;
}