.main_pic{height:200px;width:986px; margin-top:20px;}
#main {width:950px; height:110px; text-align:center; padding:10px; margin-left:8px;}
#pic {width:840px; float:left; overflow:hidden; height:100%;}
#pic li {float:left; margin:5px;}
#left,#right {display:block; width:22px; height:100%; float:left;}
#left {background:url(leftBtn.png) no-repeat center; margin-right:10px;}
#right {background:url(rightBtn.png) no-repeat center; margin-left:10px;}