#div_info{
z-index:1100;
position:fixed;
left:0px;
top:0px;
width:100%;
height:100%;
background:url(../picture/b05.png);
}

#div_info_center{
position:fixed;
left:50%;
margin-left:-375px;
top:0px;
width:766px;
height:100%;
background:#fff;
}

#div_closed{
position:fixed;
left:50%;
top:50%;
margin-left:400px;
margin-top:-20px;
width:40px;
height:40px;
background:url(../picture/info_c2.png) center center no-repeat;
cursor:pointer;
transition:background 200ms;
-moz-transition:background 200ms;	/* Firefox 4 */
-webkit-transition:background 200ms;	/* Safari 和 Chrome */
-o-transition:background 200ms;
}

#div_closed:hover
{
background:url(../picture/info_c.png) center center no-repeat;
}