function ajax_client_main(ajax_nm, frm_nm, p01, p02, p03, p04, p05) {
	var input_A = { ajax_nm: ajax_nm, p01: p01, p02: p02, p03: p03, p04: p04, p05: p05 };
	// ============================== post ·Î Àü´ÞÇÒ parameter serialize
	var pre_result_A = ajax_pre_prcs(ajax_nm, frm_nm, input_A);
	if (pre_result_A.status == false) {
		if ($("#ajax-brd-loader").css("display") == 'block')
			If_Exists_Then_Visibilty('ajax-brd-loader', 'none');
		return false;
	}
	var params = "";
	if (frm_nm != '') params = $("#" + frm_nm).serialize();
	if (params != '') params += "&";
	//console.log(pre_result_A);
	if (pre_result_A == false) { }
	else if (typeof (pre_result_A.input_A.template_nm) !== 'undefined')
		input_A["template_nm"] = pre_result_A.input_A.template_nm;
	params += $.param(pre_result_A.input_A);
	//console.log(params);
	//console.log(input_A);
	// ============================== ajax call
	$.ajax({
		type: 'POST',
		url: '/workdir/process/ajax_svr_main.php',
		data: params,
		error: function (xhr, status, error) {
			var error_txt = "code:" + xhr.status + "\n" + "message:" + ajax_error_code_2_txt(xhr, status) + "\n" + "error:" + error;
			var dt = new Date();
			var dt_month = dt.getMonth() + 1;
			var dt_day = dt.getDate();
			var dt_hour = dt.getHours();
			var dt_min = dt.getMinutes();
			var dt_key = dt.getFullYear() + '_' +
				(('' + dt_month).length < 2 ? '0' : '') + dt_month + '_' +
				(('' + dt_day).length < 2 ? '0' : '') + dt_day + '_' +
				(('' + dt_hour).length < 2 ? '0' : '') + dt_hour + '_' +
				(('' + dt_min).length < 2 ? '0' : '') + dt_min;
			Cjs_setCookie('ajx_err_' + dt_key, encodeURI(error_txt), 1);
			//console.log(error_txt);
			// ---
			if (ajax_nm == 'get_rlty_4_sns_post')
				setTimeout(function () { location.reload(); }, 30 * 1000);
		},
		success: function (data) {
			// callback ÇÔ¼ö
			ajax_callback_func(ajax_nm, frm_nm, data, input_A);
		},
		complete: function () {
			// 	return true;
		},
		timeout: (120 * 1000)
	});
}
// ========================================================================================
function If_Exists_Then_Visibilty(name_of_element, v_h_n) {
	var element = document.getElementById(name_of_element);
	if (typeof (element) != 'undefined' && element != null) {
		// exists.
		element.style.display = v_h_n;
	}
}
// ========================================================================================
function ajax_error_code_2_txt(xhr, status) {
	if (xhr.status === 0) return 'Not connect. Verify Network.';
	else if (xhr.status == 400) return 'Server understood the request, but request content was invalid. [400]';
	else if (xhr.status == 401) return 'Unauthorized access. [401]';
	else if (xhr.status == 403) return 'Forbidden resource can not be accessed. [403]';
	else if (xhr.status == 404) return 'Requested page not found. [404]';
	else if (xhr.status == 500) return 'Internal server error. [500]';
	else if (xhr.status == 503) return 'Service unavailable. [503]';
	else if (status === 'parsererror') return 'Requested JSON parse failed. [Failed]';
	else if (status === 'timeout') return 'Time out error. [Timeout]';
	else if (status === 'abort') return 'Ajax request aborted. [Aborted]';
	else return 'Uncaught Error : ' + xhr.responseText;
}