
.files
{
 cursor:pointer;
 height:25px;
 font-size:12px;
 margin-left:-30px;
 left:148px; 
 POSITION:absolute;
 filter:alpha(opacity=0);       /* IE */
 -moz-opacity:0;              /* Moz + FF */
 opacity: 0;           /* 支持CSS3的浏览器（FF 1.5也支持）*/ 
}
