/source/Plug-in/jq/themes/gray/menubutton.css

 1.m-btn-downarrow{
 2	display:inline-block;
 3	width:12px;
 4	line-height:14px;
 5	*line-height:15px;
 6	background:url('images/menu_downarrow.png') no-repeat 4px center;
 7}
 8
 9a.m-btn-active{
10	background-position: bottom right;
11}
12a.m-btn-active span.l-btn-left{
13	background-position: bottom left;
14}
15a.m-btn-plain-active{
16	background:transparent;
17	border:1px solid #d3d3d3;
18	_padding:0px 5px 0px 0px;
19	-moz-border-radius:3px;
20	-webkit-border-radius: 3px;
21}