#drop_down li:hover {position:relative; z-index:999; background:none; color: #fff !important;}

#drop_down li:hover ul.sub{left:0px; top:39px; background: #f9f9f9;  white-space:nowrap; width:190px; padding: 0px; text-indent: 8px; height:auto; z-index:300; }
#drop_down li:hover ul.sub li{display:block; position:relative; float:left; width:190px;  font-weight:normal;  height:auto;
 border-top:1px solid #d2d2d2;  padding-bottom:0px; text-align:left;  margin-left: 0 !important; line-height: normal;}
 #drop_down li:hover ul.sub li:first-child{border-top: 0}

#drop_down li:hover ul.sub li a{display:block; width:190px; font-size:12px !important; font-weight: normal;   color:#595959;
 text-decoration:none; cursor: pointer; float: left; background: #f9f9f9 !important; padding:10px 0px;  height:auto;}
#drop_down li ul.sub li a.fly{ }
#drop_down li:hover ul.sub li a:hover, #drop_down li:hover ul.sub.service li a:hover{ background: #006600 !important; color: #fff; }
#drop_down li:hover ul.sub li a.fly:hover{}

#drop_down li:hover li:hover ul,
#drop_down li:hover li:hover li:hover ul,
#drop_down li:hover li:hover li:hover li:hover ul,
#drop_down li:hover li:hover li:hover li:hover li:hover ul{left:151px; top:0px; background: #006600;  padding:0px; white-space:nowrap;
width:117px; z-index:400; height:auto;}

#drop_down ul,
#drop_down li:hover ul ul,
#drop_down li:hover li:hover ul ul,
#drop_down li:hover li:hover li:hover ul ul,
#drop_down li:hover li:hover li:hover li:hover ul ul{position:absolute; left:-9999px; top:-9999px; width:0; height:0;  list-style:none;}

#drop_down li:hover li:hover a.fly,
#drop_down li:hover li:hover li:hover a.fly,
#drop_down li:hover li:hover li:hover li:hover a.fly,
#drop_down li:hover li:hover li:hover li:hover li:hover a.fly{background:#970e5c; }

#drop_down li:hover li:hover li a.fly,
#drop_down li:hover li:hover li:hover li a.fly,
#drop_down li:hover li:hover li:hover li:hover li a.fly{background:#970e5c; }