<script type="text/javascript" language="javascript">

     onload = function () {

         /// 当显示错误页面时，首先判断iframe和最顶层的top相关的location是否为同一个对象，如果不是同一对象，

         /// 让系统定位到最顶层的框架top，且让top刷新（有可能系统重新登录的，此时需要获取最新的用户数据）

         if (window != top) {

             top.location.href = top.location.href;

         }

         //

         //if (this.location != this.parent.location) {

         //    alert("this.location != this.parent.location");

         //    this.location = this.parent.location;

         //}

     }

 </script>

给iframe定位使用的参考脚本

 /// iframe页面跳转

 function NationDir(path, title) {

     var heigth = $(window).height() - 57 - 55;

     var width = $("div.orderMain").width() + 20;

     alert(path);

     $("#frameCheckIn").attr("src", path).css({ "height": heigth, "width": width }).show();

     document.title = title;

     $("div.orderMain").hide();

 }

 /// 提供给子页面的返回函数

 function GoBack() {

     if (window != top) {

         top.location.href = location.href;

     }

     if (this.location != this.parent.location) {

         this.location = this.parent.location;

     }

     SearchData();

     var pageNew = document.getElementById("frameCheckIn");

     $(pageNew).attr("src", "").hide();

     //clear frame content

     if (pageNew.contentDocument && pageNew.contentDocument.document) {

         pageNew.contentDocument.document.body.innerHTML = "";

     }

     else if (pageNew.contentWindow && pageNew.contentWindow.document) {

         pageNew.contentWindow.document.innerHTML = "";

     }

     document.title = "出入库检查";

     $("div.orderMain").show(0);

 }

 子页面调用返回iframe的返回操作代码参考

 function ViewBack() {

     var bodyparent = parent.GoBack;

     if (bodyparent != undefined) {

         bodyparent();

     }

 }