//=======================================================================================================
var isFormSubmitted = false;
var newWin;
function submitForm (formObj){	
	if (isFormSubmitted) {		
    	alert ('Your request has been already submitted. Please wait...');
    }else {   	
  		formObj.submit();	 
    	isFormSubmitted = true;
  	}	
	return false;
}

function doSubmit(formObj) { 
  if (isValidForm(formObj)){					//in individual page
  	return submitForm(formObj);
  }else{
  	return false;
  }
}

function doPopupSubmit(formObj) {  
  if (isValidForm(formObj)){					//Skip the isFormSubmitted checking  	
  	return formObj.submit();
  }
}

/* changed to openWindow*/
/*
function MM_openBrWindow(theURL,winName,features, myform) { //v2.0
   var formObj = eval('document.' + myform);  
   newWin = window.open("about:blank", winName, features);   
   formObj.target = winName;   
   formObj.action = theURL;
   formObj.submit();  
   formObj.target = '';
}
*/

function popupWindow(url, winTitle, width, height, isResizable, hasScrollbars) {
	var winWidth = parseInt(screen.availWidth)*0.7;
    var winHeight = parseInt(screen.availHeight)*0.7;
	var allowResize = "yes";
	var showScrollbars = "yes";
	if (width!=null){
		winWidth=parseInt(width);	
	}	
	if (height!=null){
		winHeight = parseInt(height);
	}
	if (isResizable!=null){
		allowResize = isResizable;
	}	
	if (hasScrollbars!=null){
		if(hasScrollbars) {
			showScrollbars = "1";
		} else {
			showScrollbars = "0";
		}		
	}		

    var winParams = "width=" + winWidth + ",height=" + winHeight;
        winParams += ",left=0,top=0,toolbar=no,scrollbars="+showScrollbars+",resizable="+allowResize+",status=yes";

    winName = window.open(url, winTitle, winParams);
    if(winName) { 
    	winName.focus();
    }
}


function openWindow(where,winName,width,height,formObj,buttonName) {
	var features = 'left=0,top=0,toolbar=no, scrollbars=yes, status=no, resizable=yes, location=no, menubar=no, titlebar=no';
	features+=", width=" + width;
	features+=", height=" + height;
	
	if (buttonName != null) {
		//set button log if buttonName is passed
		setButtonLog(formObj, buttonName);
	}

	if(getInternetExplorerVersion() >= 1){
		if(isIE7OrAbove()){ //IE 7 or above
			newWin = window.open("about:blank", winName, features);
		}else{ //IE6
			if (newWin!='undefined' && newWin!=null && !newWin.closed){
				newWin.close();
			}			
			newWin = window.open("about:blank", winName, features);			
		}
	}else{ //other browser
		newWin = window.open("about:blank", winName, features);
	}

	formObj.target = winName;   
	formObj.action = where;
	formObj.submit();
	formObj.target = '';
	if (buttonName != null) {
		removeButtonLog(formObj);
	}	
	return newWin;
}

function setClearSessionFormFlag(formName) {
	var formObj = document.getElementById(formName);
	var input = document.createElement("input");
	input.id = "clearSessionForm";
	input.name = "clearSessionForm";
	input.type = "hidden";
	input.value='Y';
	formObj.appendChild(input);	
}

function changeLang(currentlang, formName) {
	var formObj = document.getElementById(formName);
	var changeLang = document.createElement("input");
	changeLang.id = "changeLang";
	changeLang.name = "changeLang";
	changeLang.type = "hidden";
	changeLang.value='Y';
	formObj.appendChild(changeLang);		
	
	var lang = document.createElement("input");
	lang.id = "lang";
	lang.name = "lang";
	lang.type = "hidden";
	if (currentlang=='zh') {
		lang.value='en';
	}
	else {
		lang.value='zh';
	}
	
	//remove appended lang parameter
	var url=window.location+"";
	var loginPage="login.htm";	
	var pinReGenPage="pinReGenMbr.htm";
	var memberEnrolPage="entry.htm";
	
	if ( url.indexOf(loginPage)>-1  && url.indexOf('lang=')>-1) {
		
		formObj.action=url.substring(0, url.indexOf(loginPage)+loginPage.length);
		
	}else if ( url.indexOf(pinReGenPage)>-1  && url.indexOf('lang=')>-1)  {
		formObj.action=url.substring(0, url.indexOf(pinReGenPage)+pinReGenPage.length);	
	}else if ( url.indexOf(memberEnrolPage)>-1  && url.indexOf('lang=')>-1)  {
		formObj.action=url.substring(0, url.indexOf(memberEnrolPage)+memberEnrolPage.length);	
	}	
	
	formObj.appendChild(lang);
	formObj.submit();
}

function setButtonLog(formObj, buttonName){
	var divName="BUTTON_LOG";
	var div = document.getElementById(divName);
	if (div!=null) {
		//formObj.removeChild(div);
		div.parentNode.removeChild(div); 
	}
	div = document.createElement("div");
	div.id = divName;
	div.name = divName;   
	formObj.appendChild(div);

	var input = document.createElement("input");
	input.id = buttonName;
	input.name = buttonName;
	input.type = "hidden";
	div.appendChild(input);
}

function removeButtonLog(formObj){
	var divName="BUTTON_LOG";
	var div = document.getElementById(divName);
	if (div!=null) {
		//formObj.removeChild(div);
		div.parentNode.removeChild(div);  
	}
}

function go_Menu(where,formObj){
   formObj.target = "_parent";
   formObj.action = where;
   
   if (formObj.length==0){
   		//add dummy field for ios8
	    var dummyField=document.createElement('input');
        dummyField.id="dummyFieldId";
        dummyField.name="dummyFieldName";
        dummyField.type="hidden";
        dummyField.value=new Date().getTime();
        formObj.appendChild(dummyField);
   }   
   formObj.submit();
}

/* submit form procedure, which double submission checking  */
function submitWithButtonLog(buttonName, where, formObj) {
	setButtonLog(formObj, buttonName);
	formObj.target = "_parent";
	formObj.action = where;
	submitForm(formObj);
	removeButtonLog(formObj);
}

function isNnu(where){
   cs = new String(where);
   for (var i = 0; i < cs.length; i++){
     if (cs.charAt(i) < "0" || cs.charAt(i) > "9") return true;
   }     
    if (cs.length == 0) return true;
    return false;
}

// This function is for stripping leading and trailing spaces
function trim(str){   
   return str.replace(/^\s*|\s*$/g,"");
}


function validBlockID(error){
	if('err.id.blocked'==error){
		return true;
	}else if ('err.scheme.blocked'==error){
		return true;
	}else if ('err.gp.blocked'==error){
		return true;
	}else if ('err.su.blocked'==error){
		return true;
	}else if ('err.login.id.blocked'==error){
		return true;		
	}else{
		return false;
	}
}

/*added for intranet search*/
function createHiddenField(name, value) {
	var hiddenField = document.createElement("input");   
	hiddenField.type="hidden";   
	hiddenField.name=name;
	hiddenField.id=name;    
	hiddenField.value=value;	
	return hiddenField;
}

//validate phone number
function validateContactPhone(phone){
	//alert((/[^(\d{1,}|/|\-|\(|\)|\s)(\d{1,}|/|\-|\(|\)|\s)(\d{1,}|/|\-|\(|\)|\s)$]/.test(phone)));
	//var pattern = /[^\d\(\)\/\-\s]/;
	//var pattern=/[^(\d{1,}|/|\-|\(|\)|\s)(\d{1,}|/|\-|\(|\)|\s)(\d{1,}|/|\-|\(|\)|\s)$]/;
	var pattern = /[^\d\(\)\/\-]/;	 
	if(pattern.test(phone) || phone.length<8){
		return false;
	}else{
		return true;
	}
}

//validate normal phone number
function validatePhone(phone){
	var pattern = /^\d{8}$/;	 
	if(pattern.test(phone)==false){
		return false;
	}else{
		return true;
	}
}

//validate mobile number
function validateMobile(mobile){
	var pattern = /^[456789]{1}\d{7}$/;	 
	if(pattern.test(mobile)==false){
		return false;
	}else{
		return true;
	}
}

//validate phone number with ext.
function validatePhoneWithExt(phone){
	var pattern = /^[123]{1}\d{7}$/;	 
	if(pattern.test(phone)==false){
		return false;
	}else{
		return true;
	}
}

//validate phone ext.
function validatePhoneExt(ext){
	var pattern = /^\d{1,4}$/;	 
	if(pattern.test(ext)==false){
		return false;
	}else{
		return true;
	}
}

//validate number within length
function validateNumber(text, length){
	var pattern = "^\\d{1,"+length+"}$";
	var regExp=new RegExp(pattern);
	if(regExp.test(text)==false){
		return false;
	}else{
		return true;
	}
}

//validate userId
function validateUserId(userId){
	var pattern = /^(?=(.*?[a-zA-Z]){4,})[0-9a-zA-Z]{8,16}$/;
	return pattern.test(userId);
}

//Validate email
function validateEmail(email){
	var atIdx = email.indexOf("@");
	var errorList =[];
	if ( /[^\w@'.-]/.test(email) ){
		errorList.push('The e-mail address contains invalid characters.');
	}
		
	if ( atIdx == -1 ){
		errorList.push('The e-mail address must contain an @.');
	}

	if ( atIdx == 0 ){
		errorList.push('The e-mail address must not start with @.');
	}

	if (/@.*@/.test(email)){
		errorList.push('The e-mail address must contain only one @.');
	}

	if ( ! /@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)*\.[a-zA-Z0-9_-]+$/.test( email ) ){
		errorList.push('The e-mail address must contain a period in the domain name.');
	}

	if ( /@\./.test( email ) ){
		errorList.push('Period must not immediately follow @ in the e-mail address.');	
	}

	if ( /\.@/.test( email ) ){
		errorList.push('Period must not immediately precede @ in the e-mail address.');	
	}

	if ( /\.\./.test( email ) ){
		errorList.push('Two periods must not be adjacent in the e-mail address.');
	}

	/*
	if ( ! /\.com\.?|\.net\.?|\.org\.?|\.edu\.?|\.int\.?|\.mil\.?|\.gov\.?|\.biz\.?|\.aero\.?|\.coop\.?|\.info\.?|\.pro\.?/.test( email ) ){
		errorList.push('Invalid primary domain in the e-mail address.');
	}
	*/
	return errorList;
}

function eFormDownload(theURL, myform) {
	   var formObj = eval('document.' + myform);  
	   newWin = window.open("about:blank", 'DownloadWin','scrollbars=yes,resizable=yes,width=680,height=540');   
	   formObj.target = 'DownloadWin';   
	   formObj.action = theURL;
	   formObj.submit();
}

function download_form(referenceNo, formType) {//OAP application form
	//var link = '/bct/oap/application/downloadForm.pdf?referenceNo='+referenceNo+'&formType='+formType;
	
	var link = '?referenceNo='+referenceNo+'&formType='+formType;
	if(isChrome()) {//use .htm to work for chrome at android platform
		link = '/bct/oap/application/downloadForm.htm'+link;
	} else {
		link = '/bct/oap/application/downloadForm.pdf'+link;
	}	
	
	
	winName = window.open(link, '', 'toolbar=no,scrollbars=yes,resizable=yes,status=yes');
    winName.focus();
}

function popUpPDF(url) {
	popupWindow(url, '', null, null, true, true);
}

function estatementPDFDownload(theURL, statementID) {
	var url = theURL+'?statementID='+statementID;
	//pass the url directly to window.open to avoid blank window remaining for 64-bit IE
	window.open(url, '_blank');
}

function clearForm(formObj) {//clear all values in a form
	var frm_elements = formObj.elements;
    for (i = 0; i < frm_elements.length; i++) {
        field_type = frm_elements[i].type.toLowerCase();
        switch (field_type) {
	        case "text":
	        case "password":
	        case "textarea":
	        case "hidden":
	            frm_elements[i].value = "";
	            break;
	        case "radio":
	        case "checkbox":
	            if (frm_elements[i].checked)
	            {
	                frm_elements[i].checked = false;
	            }
	            break;
	        case "select-one":
	        	frm_elements[i].selectedIndex = 0;
	        	break;
	        case "select-multi":
	            frm_elements[i].selectedIndex = -1;
	            break;
	        default:
	            break;
        }
    }
}

function isChrome() {
	//return navigator.userAgent.toLowerCase().indexOf('chrome') > -1;
	return (navigator.userAgent.match('CriOS') || navigator.userAgent.toLowerCase().match('chrome'));//check 'CriOS' for chrome in IOS
}

function dateFormat(str){
	var re = /^\d{1,2}\/\d{1,2}\/\d{4}$/
	if (re.test(str)){
		var dArr = str.split("/");
		var dd = parseInt(dArr[0],10);
		var mm = parseInt(dArr[1],10)-1;
		var yyyy = parseInt(dArr[2],10);
		var d = new Date(yyyy,mm,dd);
		return d;
	}
}

function popUpEclub() {
	var url = '/bct/oap/eClub/register.htm';
	popupWindow(url, 'EclubRegister', 1020, 700, true, true);
}

function popUpOAPUserGuide() {
	var url = 'https://www.bcthk.com/MobileRegistry/rest/cms/getToolById?itemId=193&extraFieldId=44';
	popupWindow(url, 'UserGuide', 1020, 700, true, true);
}

function escapeHtml(input) {
    return input
         .replace(/&/g, "&amp;")
         .replace(/</g, "&lt;")
         .replace(/>/g, "&gt;")
         .replace(/"/g, "&#034;")
         .replace(/'/g, "&#039;");
 }
 
function isEmpty(input){
	if(input=='undefined'||trim(input)==''){		
		return true;
	}else{
		return false;
	}
}
 
function isValidHkid(hkid,ignoreParentheses){
	var result=false;
	var checkDigit=0;
	if(!isEmpty(hkid)){
		var lowerHkid=hkid.toLowerCase();
		if(ignoreParentheses){
			lowerHkid= lowerHkid.replace(/[(|[)]/g, "");
		}
		if(lowerHkid.length==8||lowerHkid.length==9){
			var lastDigit=lowerHkid.substring(lowerHkid.length-1,lowerHkid.length);		
			lowerHkid=lowerHkid.substring(0,lowerHkid.length-1);

			if(lowerHkid.length==7){
				if((lowerHkid.charCodeAt(0)<'a'.charCodeAt(0))||(lowerHkid.charCodeAt(0)>'z'.charCodeAt(0))){
					return result;
				}else{
					checkDigit=8*(lowerHkid.charCodeAt(0)-'a'.charCodeAt(0)+1);
				
					for(var i=1; i<lowerHkid.length; i++){
						if ((lowerHkid.charCodeAt(i)<'0'.charCodeAt(0)) || (lowerHkid.charCodeAt(i)>'9'.charCodeAt(0))){							
							return result;
						}else{						
							checkDigit=checkDigit+(8-i)*(lowerHkid.charCodeAt(i)-'1'.charCodeAt(0)+1);
						}
					}
				}
			}else{
				if ((lowerHkid.charCodeAt(0)<'a'.charCodeAt(0)) || (lowerHkid.charCodeAt(0)>'z'.charCodeAt(0)) || 
					(lowerHkid.charCodeAt(1)<'a'.charCodeAt(0)) || (lowerHkid.charCodeAt(1)>'z'.charCodeAt(0)) ){
					return result;
				}else{									
					checkDigit=9*(lowerHkid.charCodeAt(0)-'a'.charCodeAt(0)+10);			
					checkDigit+=8*(lowerHkid.charCodeAt(1)-'a'.charCodeAt(0)+10);
					for (var i=2; i<lowerHkid.length; i++){
						if ((lowerHkid.charCodeAt(i)<'0') || (lowerHkid.charAt(i)>'9')){
							return result;
						}else{													
							checkDigit+=(9-i)*(lowerHkid.charCodeAt(i)-'1'+1);
						}
					}
				}
			}
			if (checkDigit>=0){
				var outCheckDigit="";
				var reminding=0;
				reminding=11-(checkDigit % 11);		
				if (reminding==10){
					outCheckDigit="a";
				}else if (reminding==11){
					outCheckDigit="0";
				}else{					
					outCheckDigit=reminding.toString();
				}			
				if (outCheckDigit===lastDigit){
					result=true;
				}
			}	
		}
	}
	return result;
}

function submitFormMobile(where,formObj) {
	showLoadingDialog();
	formObj.target = "_parent";
	formObj.action = where;
	formObj.submit();
	//removeButtonLog(formObj);
}

function changeLangMobile(currentlang, formName) {
	showLoadingDialog();
	changeLang(currentlang, formName);
}

function loadPopup(where,title) {
	showLoadingDialog();
	var ajaxPopupForm = document.createElement('form');
	$(ajaxPopupForm).attr("action", where);	
	$(ajaxPopupForm).attr("method", "post");
	AjaxForm(ajaxPopupForm , ajaxPopupFormCallback);
	$("#popupDialog #popupDialogTitle").html(title);
	$(ajaxPopupForm).submit();
}
function ajaxPopupFormCallback(data, textStatus, XMLHttpRequest){
	$('#popupDialog').modal('show');	
	$("#popupDialog #popupDialogMessage").html(data);
	hideLoadingDialog();
}


function ajaxSuccess(data, textStatus, XMLHttpRequest, callback){
	callback(data, textStatus, XMLHttpRequest);
}
function ajaxError(xhr, textStatus, errorThrown) {
	if (textStatus=="timeout"){
		showAlertMessage('Request timeout. Please try again later.');
	}else if(xhr.status==600) {
		window.location = xhr.responseText;
	}
}

function chkErrMobile(errList, alertCallback) {
	if ( errList.length != 0 ){
		var errMsg = '';
		/*
		for (i=0; i<errList.length; ++i) {
			errMsg+=errList[i];
			errMsg+='\n';
		}
		*/
		/*
		errList.forEach((element) => {
			errMsg+=element;
			errMsg+='\n';
		});
		*/
		showAlertMessage(errList, alertCallback);
	}	
	return errList.length == 0;
}