1.showModalDialog返回值给父窗口 2.winow.open开的窗口赋值给父窗口

子窗口:

function SelectIdInfo(rowId)
          {
               window.dialogArguments[0].document.getElementById(window.dialogArguments[1]).value =Grid1.GetRowFromClientId(rowId).GetMember('INVTITLE_NAME').Text;               
               window.close();
          }

父窗口:

<a id="btnSearch" href="#" onclick="return OpenNewForm1();" runat="server" >检索</a>

 function OpenNewForm1()//invoked by "btnSearch"--->检索“开票抬头”，由invoice_inv_title_choose.aspx传回本页面
        {
          var varParentId;
          varParentId=document.getElementById("hidCompanyID").value
          
          var url = "invoice_inv_title_choose.aspx?pare_id="+varParentId+"";//dbo.PD_COMPANY.COMP_C_CNAME 涉帐单位 SZDW对应的ID
          var myReturnValue=0;
          myReturnValue=window.showModalDialog(url,[window,document.getElementById("txtTitle").id],"status:Modeless;edge:raised;unadorned:no;scroll=no;resizable:yes;center=yes;help:no;dialog555px;dialogheight:395px");
        }

**************************************************
父窗口：

//配载船舶 按钮 弹出 sel_job_cq.aspx:选择"船名" "航次"
        function OpenNewForm1()
        {        
              var myReturnValue = 0;
              myReturnValue=window.showModalDialog('sel_job_cq.aspx',[window,document.getElementById("tbVessel").id,document.getElementById("tbVoy").id],"status:Modeless;edge:raised;unadorned:no;scroll=no;resizable:yes;center=yes;help:no;dialog615px;dialogheight:398px");
        }

子窗口：

 //"选择"链接 最右边----返回值给父窗口:view_job_dcpz.aspx
         function SelectIdInfo(rowId)
         {
               window.dialogArguments[0].document.getElementById(window.dialogArguments[1]).value =Grid1.GetRowFromClientId(rowId).GetMember('vessel').Text;
               window.dialogArguments[0].document.getElementById(window.dialogArguments[2]).value =returnValue=Grid1.GetRowFromClientId(rowId).GetMember('voy').Text; //returnValue 
               window.close();
         }

/////////////////////////////////////////////////////
父窗口：

 function AddUrl1()//invoked by "联系信息" <img>
        {
           var a=document.form1.Pub_ddl7$tbName.value;
           var b=document.form1.Pub_ddl1$tbName.value;
           var c=document.form1.Pub_ddl4$tbName.value;
           var d=document.form1.Pub_ddl7$tbCode.value;
          
           var urlGoto = "Sel_lxinfo.aspx?ccname="+a+"&lcname="+b+"&dcname="+c+"&id="+d;
           //window.showModalDialog(urlGoto,'',"status:Modeless;edge:raised;unadorned:no;scroll=no;resizable:yes;center:yes;help:no;dialog580px;dialogheight:610px"); 
           window.open(urlGoto,'','height=380,width=810,top=0,left=0,toolbar=no,menubar=no,scrollbars=no');
        }

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子窗口：

 function Change_ID(rowId)
     {
          var a=Grid1.GetRowFromClientId(rowId).GetMember('shipper_d').Text;
          var b=Grid1.GetRowFromClientId(rowId).GetMember('consignee_d').Text;
          var c=Grid1.GetRowFromClientId(rowId).GetMember('notifier_d').Text;
          var d=Grid1.GetRowFromClientId(rowId).GetMember('AGENT_D').Text;
          if(a!="")
          {
            window.opener.document.getElementById("TextBox2").value=a;//window.opener代表父窗口
          }
          if(b!="")
          {
           window.opener.document.getElementById("TextBox5").value=b;
          }
          if(c!="")
          {
             window.opener.document.getElementById("TextBox6").value=c;
          }
             
        
             window.opener.document.getElementById("TextBox3").value=d;
         
       window.close();
     }