function chg_trans(fom,x,y,z)
{
  fom.trans_way.value = x;
  fom.trans_fee.value = y;
  fom.trans_fee_str.value = y;
  fom.trans_nofee.value = z;
}

function pdt_mod(fom,x,y)
{
  fom.op.value = "mod";
  fom.pdt_id.value = x;
  fom.buy_num.value = y;
  fom.action="order_add.php";
  fom.target="ifrm";
  fom.submit();
}

function pdt_del(fom,x)
{
  fom.op.value = "del";
  fom.pdt_id.value = x;
  fom.action="order_add.php";
  fom.target="ifrm";
  fom.submit();
}

function total_price(fom)
{
  var total_price = 0;
    fom.order_total.value = total_price;
  
  /* 免運費設定
	  if(total_price >= parseInt(fom.trans_nofee.value) )
	  {
	    fom.trans_fee_str.value = "免運費";
	    fom.trans_total.value = total_price;
	  }
	  else
	  {
	    var trans_fee = 0;
	    if(fom.trans_fee.value!="")
	    {
	      trans_fee = parseInt(fom.trans_fee.value);
	      fom.trans_fee_str.value = trans_fee;
	    }
	    fom.trans_total.value = total_price + trans_fee;
	  }
  */
  fom.trans_total.value = total_price ;
}


function insOrderChk(fom)
{
  fom.trans_way.value= fom.trans_way.value.trim();
  fom.trans_fee.value= fom.trans_fee.value.trim();
  fom.trans_nofee.value= fom.trans_nofee.value.trim();
  fom.order_total.value= fom.order_total.value.trim();
  fom.trans_total.value= fom.trans_total.value.trim();

  total_price(fom);

  var chkitem;

/* 不須選擇運送方式
  chkitem = check_null(fom.trans_fee.value);
  if( chkitem != "" )
  {
    alert( "請先選擇運送方式!!" );
    fom.chktrans[0].focus();
    return false;
  }
*/
/* 不需檢查運費選項
  check_null(fom.trans_way.value)
  + check_char(fom.trans_way.value)
  + check_null(fom.trans_fee.value)
  + check_null(fom.trans_nofee.value)
  + check_number(fom.trans_fee.value)
  + check_number(fom.trans_nofee.value)
*/  
  chkitem
  = 
  check_null(fom.order_total.value)
  + check_null(fom.trans_total.value)
  + check_number(fom.order_total.value)
  + check_number(fom.trans_total.value);
  if( chkitem != "" )
  {
    alert( "訂單有問題，無法送出訂購資料!!" );
    return false;
  }

  fom.action='module.php';
  fom.modname.value='order_rcv';
  fom.target="_top";
  fom.submit();

}