分页后弹出模态窗口刷新父窗口

父窗口中有分页，如点第二页后，选中某项，点编辑，弹出模态窗口，
关闭模态窗口后，父窗口刷新，且保持在第二页：
父窗口：  
 function showEdit(personId)
    {
     var value=window.showModalDialog("EditPerson.aspx?personId="+personId,window,"dialogWidth=700px;dialogHeight=700px;scroll:yes");
     if(value==true)
     {
                       var pager2=document.getElementById("page2_input");//pager1为分页控件的下拉框
                   var  pageIndex=pager2.options[pager2.selectedIndex].value;//刷新前是哪一页被选中
                    location.href=location.href;

                    if(pageIndex>0)
                       {
                         pageIndex--;
                       }
                    else
                    {
                      pageIndex=0;
                    }
                  pager2.options[pageIndex].selected="selected";
                  pager2.onchange();
     }
    }
      <webdiyer:AspNetPager ID="page2" runat="server" Width="60%" HorizontalAlign="right"
                            PageSize="15" LastPageText="末页" FirstPageText="首页" NextPageText="下一页" PrevPageText="上一页"
                            ShowPageIndexBox="Always" PageIndexBoxType="DropDownList" CustomInfoHTML="%RecordCount%个记录/%PageCount%页"
                            CustomInfoTextAlign="Right" ShowCustomInfoSection="Left" CustomInfoStyle="padding-top:4px;"
                            OnPageChanged="pager2_PageChanged" NumericButtonCount="3">
                        </webdiyer:AspNetPager>//此控件会生成一个page2_input的下拉框