js取得上一个界面信息

 var transfAmountObj = window.opener.document.all('transfAmount');

     if(transfAmountObj != null){

     //计算合计转账金额

  var tbObj = window.opener.document.all.originalContractInfor;

  var totalAmt = 0;

  for(var tmp=1;tmp<tbObj.rows.length;tmp++){

   var rowIdx = tmp+1;

   var amt = tbObj.all("soldAmount_" + rowIdx).value.excludeNotNumericDot();

   totalAmt += amt*1.0;

  }

     transfAmountObj.value = FormatMoney(totalAmt);

     }

     window.close();