$.fn.ajaxSubmit = function(e) {
  this.submit(function(){
    $("#formErrors_ajax").removeClass().addClass('ajax_message_box').text('Ждемс...').fadeIn("slow");
    var params = {};
    $(this).find("input[@checked], input[@type=\'text\'], input[@type=\'hidden\'], input[@type=\'password\'], input[@type=\'submit\'], option[@selected], textarea").filter(":enabled").each(function() {params[ this.name || this.id || this.parentNode.name || this.parentNode.id ] = this.value;});
    $.post("./XXX", params, function(xml) {
      strError = null;
      oFocus = null;
      $("AjaxResponse", xml).each(function() {
        strError = this.getAttribute("error");
        oFocus = this.getAttribute("focus");
        strRedirect = this.getAttribute("redirecturl");
      });
      if (strError.length == 0) {
        $("#formErrors_ajax").fadeTo(200,0.1,function() {$(this).html('').addClass('off').fadeTo(900,1);});
        redirectu = "YES";     /***   редиректить   ***/
      } else {
        redirectu = "NO";      /***  не редиректить   ***/
        $("#formErrors_ajax").fadeTo(200,0.1,function() {$(this).html(strError).addClass('ajax_error').fadeTo(900,1);});
        if (oFocus) $("#" + oFocus).get(0).focus();
      }
    });
    if (redirectu == "NO") {   /***   невидно переменную redirectu   ***/
      return false;
    } else {
      return true;
    }
  });
  return this;
}