body,div,ul,li { padding: 0; margin: 0; }
ul { list-style: none ; }
img { border: none; margin: auto; }
a { blr: expression(this.onFocus=this.blur()); outline: none; }

.www51buycom { width: 800px; height: 600px; margin:20px auto 0; position: relative; overflow:hidden;}

.www51buycom .num { overflow:hidden; position: absolute; bottom:12px; left: 15px; zoom:1; z-index:3 }
.www51buycom .num li { width: 88px; height: 88px; text-align: center; margin-right: 10px; border: 3px solid transparent; background-color: #fff; background-color: rgba(255,255,255, 0.7); cursor:pointer; float: left; }
.www51buycom .num li.on { border-color:#ff9600;}
.www51buycom .num li a { display: table-cell; width: 82px; height: 82px; vertical-align: middle;}

.www51buycom .prev,
.www51buycom .next { display: block; width: 89px; height: 89px; background: url(../images/ps.png) no-repeat; position: absolute; top: 255px;}
.www51buycom .prev { left: 0; }
.www51buycom .next { right: 0; background-position: right }