function checkA(){

	var f_name_value = document.getElementById("F_Name").value;
	var f_email_value = document.getElementById("F_Email").value;
	var f_title_value = document.getElementById("F_Title").value;
	var f_message_value = document.getElementById("F_edtTextMsg").value;
	var f_checknumber_value = document.getElementById("F_CheckCode").value;
	
	if (f_name_value == "" ){
		alert("您沒有輸入姓名!");
		return false;
	}else if (!checkEMail(f_email_value)){
		alert("Email 格式有問題!");
		return false;
	}else if (f_title_value == "" ){
		alert("您沒有輸入標題!");
		return false;
	}else if (f_message_value == ""){
		alert("您沒有輸入內訊息!");
		return false;
	}else if (f_checknumber_value == ""){
		alert("您沒有輸入檢查碼!");
		return false;		
	}


	var postbody = '';

	with ( document.Form_MSG )
	{
		//alert(F_Name.value);
		postbody+= '&F_Name=' + encodeURIComponent(F_Name.value);
		postbody+= '&F_MsgTo=' + (F_MsgTo[0].checked ? encodeURIComponent(F_MsgTo[0].value) : encodeURIComponent(F_MsgTo[1].value));
		postbody+= '&F_Email=' + encodeURIComponent(F_Email.value);
		postbody+= '&F_Title=' + encodeURIComponent(F_Title.value);
		postbody+= '&F_edtTextMsg=' + encodeURIComponent(F_edtTextMsg.value);
		postbody+= '&F_Hidden=' + (F_Hidden[0].checked ? '1' : '0');
		postbody+= '&F_CheckCode=' + encodeURIComponent(F_CheckCode.value);
	}

	var url = 'guestbook-2.php?act=submit';
	container = $('ProductInfo').offsetLeft == 0 ? 'ProductInfo' : 'floatProdcut';
	/*
	var x = new Ajax.Updater(container, url, {method: 'post', asynchronous: false, postBody: postbody} );
	*/

	var x = new Ajax.Request(url, {method: 'post', asynchronous: false, postBody: postbody} );
	// load_html('guestbook.php');
	// alert('服務人員將盡快與您聯繫,謝謝您');
	//return false;
	load_html('guestbook-ok.html');
	return true;
}

function checkEMail(chk_value){
	re = /^[^\s]+@[^\s]+\.[^\s]+$/;
	if (re.test(chk_value)){
		//alert("符合驗證");
		return true;
	}else{
		//alert("驗證失敗");
		return false;
	}	
}