.bg{background-color: #000;position: fixed; z-index: 9999;left: 0;top: 0; width: 100%; height: 100%; opacity: 0.5; filter: alpha(opacity=50); -moz-opacity: 0.5;}.box{position: fixed; min-width: 400px; min-height:150px; left: 50%; top: 50%; margin-left: -200px; margin-top: -75px; height: auto; z-index: 10000; background-color: #fff; border: solid 1px #dddddd;}.box_head{background-color: #f7f7f7; border-bottom: solid 1px #dddddd; height: 30px; padding: 10px;}.box_title{float: left; letter-spacing: 2px; font-size: 16px; font-weight: bold;}.box_close{background: url("/Images/global.png") no-repeat -218px 3px; float: right; width: 19px; height: 19px; cursor: pointer;}.box_content{min-width: 100px; min-height: 50px; color: #000000; font-size: 16px; padding: 20px; text-align: center;}