dl, dt, dd{ margin:0; padding:0;} 
dl {	
	width: 100%;
}
.booksirmenu dt {
	height:30px;
	line-height:30px;
	text-align:center;
	cursor: pointer;
	position: relative;
    font-weight:bold;
    
}
.leftIco{ background:url(../images/menu_bgs.gif); width:182px; height:30px;}
.booksirmenu dd {
	display:none;line-height:25px;
}
.booksirmenu dd a{
	
  background:url(../images/menu_bg1.gif);
  display:block;
  color:#006699;
  text-align:center;
  line-height:26px;
  height:26px;
  text-decoration:none;
}
.booksirmenu dd a:hover{
  color: #000000;
  text-decoration:none;
	background-image: url(../images/menu_bg2.gif);
	background-repeat: no-repeat;
}