var allowCaptchaRefresh = true;

function form_control() {

  $('f_company').disabled = true;
  $('f_company_function').disabled = true;
  $('f_surname').disabled = true;
  $('f_email').disabled = true;
  $('f_text').disabled = true;
  $('f_captcha').disabled = true;
  $('su_button').disabled = true;

  $('f_company_ico').innerHTML = "";
  $('f_company_function_ico').innerHTML = "";
  $('f_surname_ico').innerHTML = "";
  $('f_email_ico').innerHTML = "";
  $('f_text_ico').innerHTML = "";
  $('f_captcha').innerHTML = "";

  $('f_company').style.borderColor = "#CCCCCC";
  $('f_company_function').style.borderColor = "#CCCCCC";
  $('f_surname').style.borderColor = "#CCCCCC";
  $('f_email').style.borderColor = "#CCCCCC";
  $('f_text').style.borderColor = "#CCCCCC";
  $('f_captcha').style.borderColor = "#CCCCCC";

  allowCaptchaRefresh = false;

  new Ajax.Request('form.ajax.jsp', {
    method:'post',
    parameters: {
      f_company: $('f_company').value,
      f_company_function: $('f_company_function').value,
      f_surname: $('f_surname').value,
      f_email: $('f_email').value,
      f_text: $('f_text').value,
	  f_captcha: $('f_captcha').value
    },
    onSuccess: function(transport) {
       eval(transport.responseText);
    }
  });
}

function captchaRefresh() {
  if (allowCaptchaRefresh) {
    d = new Date;
    $('captchaimage').src = '../../jsp/captcha.jsp?t=' + d.getTime();
    $('f_captcha').value = '';
    $('f_captcha').focus();
  }
}