var $company = $("#company-name").val();
    var $code = $("#company-code").val();
    var $type = $("#code-type").val();
    var $address = $("#company-address").val();

    res = $.ajax({ 
      url: "/webservices/ajax.asmx/Search...", 
      type: "post", 
      data: ({ company:$company, code:$code, type:$type, juraddress:$address }),
      cache: false,
      async: false,
      beforeSend: function ( xhr ) {
        xhr.overrideMimeType("text/plain; charset=windows-1251"); //это не помогает (
      }
    }).responseText + '';
    alert(res);
  }