.banner_ad *{padding:0;margin:0;list-style:none;}
.banner_ad{ min-width:997px; position:relative; height:500px; overflow:hidden; margin:0 auto;  }
.banner_ad .bd{ position:relative; z-index:0; }
.banner_ad .bd ul{ width:100% !important; }
.banner_ad .bd li{ width:100% !important; height:500px; text-align:center; }
.banner_ad .bd li img {border:0;}
.banner_ad .bd li a{text-decoration:none;}
.banner_ad .hd{ width:100%;  position:absolute; z-index:1; bottom:0px; left:0; height:30px; line-height:30px; text-align:center; }
.banner_ad .hd ul li{ cursor:pointer; display:inline-block; *display:inline; zoom:1; width:11px; height:11px; margin:4px; background:url(../../inc/pptshow7/pptshow7_dot.png) 0 0; overflow:hidden; line-height:9999px; filter:alpha(opacity=40);opacity:0.4; }
.banner_ad .hd ul .on{ filter:alpha(opacity=100);opacity:1;  }
.banner_ad .prev,
.banner_ad .next { width: 60px; height: 90px; margin: -60px 0 0; display: none; background: url(../../inc/pptshow7/pptshow7_ctr.png) no-repeat 0 0; position: absolute; top: 50%; z-index: 10; cursor: pointer; text-indent: -9999px; filter:alpha(opacity=20);opacity:0.2;  }
.banner_ad .prev { left:15%; }
.banner_ad .next { background-position: 0 -90px; right:15%; }
.banner_ad .prev:hover,
.banner_ad .next:hover { filter:alpha(opacity=50) !important;opacity:0.5 !important; }