#zishu_test {width: 148px; height: 165px; float:left; text-align:center; margin:12px 7px; }
#zishu_test li{ width:148px; height:165px; padding-top:5px; text-align:center; position:relative; float:left;  border:1px solid #edecec;}
#zishu_test li a{width:148px; display:block;color:#858585;line-height: 17px;font-family: "Arial";font-size: 12px;}
#zishu_test li img{ width:118px; height:165px;}
#zishu_test li span{display:none;}

#zishu_test li a:hover{ height:100px;font-family: "Arial";font-size:12px;text-align:left;line-height:24px; text-align:center;} 
#zishu_test li a:hover span{margin-top:142px;display:block;background:url(../images/tushubg.png) no-repeat; width:130px;color:#fff;position:absolute; font-family: "Arial";font-size: 12px; padding:0 10px;} 
* html #zishu_test li a:hover span {margin-left:0px; } /* IE6 */ 
*+html #zishu_test li a:hover span {margin-left:0px; }/* IE7*/