#banner {position:relative; z-index:2; width:100%; height:420px; overflow:hidden;}
#banner .pics {position:relative; width:100%; height:100%;}
#banner .pics li {display:none; position:absolute; top:0; left:0; z-index:2; width:100%; height:100%; background:no-repeat center 0;}
#banner .pics li a {display:block; width:100%; height:100%;}
#banner .pics .b1 {display:list-item;}
#banner .btns a {position:absolute; top:50%; z-index:4; margin-top:-25px; width:50px; height:50px; -ms-transition:left 400ms, right 400ms; transition:left 400ms, right 400ms; -webkit-transition:left 400ms, right 400ms; -moz-transition:left 400ms, right 400ms; -o-transition:left 400ms, right 400ms;}
#banner .btns .prev {left:-50px;}
#banner .btns .next {right:-50px;}
#banner .btns .prev.on {left:120px;}
#banner .btns .next.on {right:120px;}
#banner .btns a span {position:absolute; top:0; left:0; width:100%; height:100%; -ms-transition:-ms-opacity 300ms;  transition:opacity 300ms;-webkit-transition:-webkit-opacity 300ms; -moz-transition:-moz-opacity 300ms; -o-transition:-o-opacity 300ms; cursor:pointer;}
#banner .btns a span.off {-webkit-opacity:1; opacity:1; display:block\9;}
#banner .btns a span.on {-webkit-opacity:0; opacity:0; display:none\9;}
#banner .btns .prev .off {background:url(../images/prev.png) no-repeat 0 0;}
#banner .btns .prev .on  {background:url(../images/prev_on.png) no-repeat 0 0;}
#banner .btns .next .off {background:url(../images/next.png) no-repeat 0 0;}
#banner .btns .next .on {background:url(../images/next_on.png) no-repeat 0 0;}
#banner .btns a:hover .off {-webkit-opacity:0; opacity:0; display:none\9;}
#banner .btns a:hover .on {-webkit-opacity:1; opacity:1; display:block\9;}