.gaoke_tree{position:relative;float:left;width:178px;zoom:1;font-family:"Microsoft YaHei","微软雅黑",arial;}.gaoke_tree h3,.gaoke_tree h4,.gaoke_tree ul,.gaoke_tree ul li{margin:0;padding:0;}.gaoke_tree_hidden{display:none;}.gaoke_tree ul li{display:inline;}.gaoke_tree ul li{display:inline-block;width:100%;position:relative;min-height:43px;_height:43px;z-index:10;zoom:1;}.gaoke_tree ul li h4{cursor:pointer;border-bottom:1px solid #ccc;font-weight:bold;text-align:left;text-decoration:none;font-size:16px;display:block;line-height:43px;}.gaoke_tree ul li h4:hover{text-decoration:none;color:#999;}.gaoke_tree ul li h4.selected{color:#f07225;background-image:url(../imgs/itts.png);background-repeat:no-repeat;background-position:center right;}.gaoke_tree ul li.noline{border-bottom:none;}.gaoke_tree li .list-item{padding:5px 0;position:relative;zoom:1;display:none;}.gaoke_tree li .list-item p{cursor:pointer;text-align:left;border-bottom:1px dotted #ccc;margin:0 6px 0 16px;padding:6px 0;}.gaoke_tree li .list-item p:hover{text-decoration:none;color:#5d5d5d;}.gaoke_tree li .list-item p.selected{color:#f07225;background-image:url(../imgs/its.png);background-repeat:no-repeat;background-position:center right;}