.nav_xiala { MARGIN: 0px auto;background:; margin: 0 auto; }
.nav_xiala ul { PADDING: 0px; Z-INDEX: 100;  FLOAT: left; MARGIN: 0px; liST-STYLE-TYPE: none }
.nav_xiala ul li {DISPLAY: block; FLOAT: left;liNE-HEIGHT:18px; POSITION: relative; TEXT-AliGN: center }
HTML .nav_xiala ul li { FLOAT: left; text-align:center; liNE-HEIGHT:33px; POSITION: relative; TEXT-AliGN: center }
.nav_xiala ul li A { DISPLAY: block;  }
.nav_xiala ul li A:link { COLOR:;  }
.nav_xiala ul li A:visited { COLOR:; }
.nav_xiala ul li A:hover {COLOR:; }

.nav_xiala ul li ul{VISIBIliTY: hidden;  POSITION: absolute; }
.nav_xiala ul li ul li {FLOAT: left; WIDTH:120px;height:50px; liNE-HEIGHT: 50px; text-align:center; background:none;border-bottom:1px solid #FFF;overflow:hidden; background:#f7f7f7;}
.nav_xiala ul li ul li a{ DISPLAY: block; font-size:13px;  color:#000;}
.nav_xiala ul li:hover ul li a{}
.nav_xiala ul li ul li a:hover {font-size:13px;BACKGROUND: #2a2a2a; color:#f4f4f4;height:50px;overflow:hidden;}
.nav_xiala ul li ul li ul { TOP: 0px }