#sddm {margin:0px 0px 0px 0px;padding:0;width:980px;height:50px;z-index:9999;font-family:"微软雅黑";line-height:50px;}
#sddm li {margin:0;padding:0;list-style:none;float:left;z-index:9999;font-family:"微软雅黑";font:12px arial; position:relative;}

#sddm li a {display:block;color:#333333;font-size:15px;text-decoration:none;z-index:9999;line-height:54px;height:54px; padding:0px 20px; margin:0px; position:relative; text-align:center;font-family:"微软雅黑";}
#sddm li:hover > a{color:#f00;}
#sddm li:hover div{ display:block;} 
#sddm li div {position:absolute;width:180px;margin:0px 0px 0px 0px;background:#2D5EB3;z-index:9999;font-family:"微软雅黑";border:0px solid #2D5EB3; top:50px; left:0px; display:none;}
#sddm li div a {position:relative;display:block;margin:0;padding:5px 0px 15px 15px;width:auto;white-space:nowrap;text-align:left;text-decoration:none;background:#efefef;color:#333333;height:10px;font:13px arial;font-family:"微软雅黑";border-bottom:1px dotted #cccccc;}
#sddm li div a:hover {background:#0C4DA2;color:#FFF}
#sddm .sy {background:#F8B62C;}
.m_line {float:right;width:2px;height:53px;line-height:53px;/*ff下有效(图片垂直居中)*/}
.m_line img {margin-top:expression(( 44 - this.height ) / 2);/*ie下有效(图片垂直居中)*/}