简单弹出层设置

<script type="text/javascrit"> 

function showWindow(o){
 var obj=$(o);
 var offset=obj.offset();
 var confirmWindowID = $("#confirmWindowID");
  confirmWindowID.css({
                                "position":"absolute",
                                "z-index":"99",
                                "left":(offset.left-(confirmWindowID.width()/2))+"px",
                                "top":(offset.top-confirmWindowID.height()-10)+"px",
                                 "display":"block"
                                  });
}

</script>