Jquery全屏遮罩层DIV的实现代码

<script type="text/javascript">
$(document).ready(function () {

 $("#go").click(function () {
       /*属性*/
       $("#go2").css({ "position": "absolute", "text-align": "center", "top": "0px", "left": "0px", "right": "0px", "bottom": "0px", "background": "red", "visibility": "visible", "filter": "Alpha(opacity=90)"
       });
       /*高为屏幕的高*/
       $("#go2").css({
           height: function () {
           return $(document).height();
       },
           width:"100%"
        });
     });
});