CSS设置 图片垂直水平居中

.div{
width:500px;
height:500px;
line-height:500px;
text-align:center;
overflow:hidden;
display:table-cell;
vertical-align:middle;
*display:block;
*font-size:436px;
}
.div img{vertical-align:middle;line-height:500px; }