  var isIE = false;
  var req01_AJAX;
  var READY_STATE_UNINITIALIZED = 0;
  var READY_STATE_LOADING       = 1;
  var READY_STATE_LOADED        = 2;
  var READY_STATE_INTERACTIVE   = 3;
  var READY_STATE_COMPLETE      = 4;
  var PayUrl = "";

  function displayElement( targetObj, targetText, targetColor )
  {
    if ( targetObj.childNodes.length > 0 )
    {
      targetObj.replaceChild( document.createTextNode( targetText ), targetObj.childNodes[ 0 ] );
    } else
    {
      targetObj.appendChild( document.createTextNode( targetText ) );
    }
    targetObj.style.color = targetColor;
  }

  function clearElement( targetObj )
  {
    for ( var i = ( targetObj.childNodes.length - 1 ); i >= 0; i-- )
    {
      targetObj.removeChild( targetObj.childNodes[ i ] );
    }
  }

  function initRequest()
  {
    if ( window.XMLHttpRequest )
    {
      return new XMLHttpRequest();
    } else if ( window.ActiveXObject )
    {
      isIE = true;
      return new ActiveXObject( "Microsoft.XMLHTTP" );
    }
  }

  function sendRequest( url )
  {
    req01_AJAX = null;
    req01_AJAX = initRequest();

    if ( req01_AJAX )
    {
      req01_AJAX.onreadystatechange = process_AJAX;
      req01_AJAX.open( "POST", url, true );
      req01_AJAX.send( null );
    }
  }

  function kcp_AJAX()
  {
    var url = "order_approval.php";
    var form = document.order_info;
    var params = "?site_cd=" + form.site_cd.value
    + "&ordr_idxx=" + form.ordr_idxx.value
    + "&good_mny=" + form.good_mny.value
    + "&pay_method=" + form.pay_method.value
    + "&escw_used=" + form.escw_used.value
    + "&good_name=" + form.good_name.value
    + "&Ret_URL=" + form.Ret_URL.value;
    sendRequest( url + params );
  }

  function process_AJAX()
  {
    if ( req01_AJAX.readyState == READY_STATE_COMPLETE )
    {
      if ( req01_AJAX.status == 200 )
      {
        if ( req01_AJAX.responseText != null )
        {
          var txt = req01_AJAX.responseText.split(",");

          // success
          if( txt[0].replace(/^\s*/,'').replace(/\s*$/,'') == '0000' )
          {
            document.getElementById("approval").value = txt[1].replace(/^\s*/,'').replace(/\s*$/,'');
			alert("성공적으로 거래가 등록 되었습니다.");
            PayUrl = txt[2].replace(/^\s*/,'').replace(/\s*$/,'');
            call_pay_form();
          }
          // fail
          else
          {
            alert(txt[3].replace(/^\s*/,'').replace(/\s*$/,''));
          }
        }
      }
      else
      {
        alert( req01_AJAX.responseText );
      }
    }
    else if ( req01_AJAX.readyState == READY_STATE_UNINITIALIZED )
    {
    }
    else if ( req01_AJAX.readyState == READY_STATE_LOADING )
    {
    }
    else if ( req01_AJAX.readyState == READY_STATE_LOADED )
    {
    }
    else if ( req01_AJAX.readyState == READY_STATE_INTERACTIVE )
    {
    }
  }
