// pattern for a valid e-mail address
var mailExp = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
// pattern for gsm number (5xxxxxxxxx)
var gsm10Exp = /^5{1}[0-9]{9}$/;
// pattern for gsm number (05xxxxxxxxx or 5xxxxxxxxx)
var gsm11Exp = /^0?5{1}[0-9]{9}$/;
// pattern for tc kimlik no
var tcKimlikNoExp = /^[0-9]{11}$/;
// pattern for numeric fields
var numericExp = /^[0-9]+$/;
// pattern for alphabetic fields
var alphaExp = /^[a-zA-Z\u015E\u015F\u0130\u0131\u011E\u011F\u00DC\u00FC\u00D6\u00F6\u00C7\u00E7]+$/
//pattern for alpha-numeric fields
var alphaNumExp = /^[0-9a-zA-Z\u015E\u015F\u0130\u0131\u011E\u011F\u00DC\u00FC\u00D6\u00F6\u00C7\u00E7]+$/
// name expression; allows multiple words and dots after words
var multiNameExp = /^[a-zA-Z\u015E\u015F\u0130\u0131\u011E\u011F\u00DC\u00FC\u00D6\u00F6\u00C7\u00E7]+((\.? {1})?[a-zA-Z\u015E\u015F\u0130\u0131\u011E\u011F\u00DC\u00FC\u00D6\u00F6\u00C7\u00E7]+)*\.?$/

function checkSize(txt, max) {
	if (!txt || !max) return;

	if (txt.value.length > max) {
		txt.value = txt.value.substring(0, max);
	}
}

function feedNumeric(txt, dlen) {
	// fill with leading zeros
	if (!txt || !dlen) return;

	var txtlen = txt.value.length;
	if (txtlen < 1) return;

	if (txtlen < dlen) {
		var cnt = dlen - txtlen;

		for (var i = 0; i < cnt; i++) {
			txt.value = "0" + txt.value;
		}
	}
}

function maxMessage(field, max) {
	return "'" + field + "' alan\u0131 i\u00e7in en fazla " + max + " karakter giriniz.\n";
}

function emptyMessage(field) {
	return "L\u00fctfen '" + field + "' alan\u0131n\u0131 bo\u015f b\u0131rakmay\u0131n\u0131z.\n";
}

function getRadioValue(rd) {
	if (!rd || !rd.length) return null;

	for (var i = 0; i < rd.length; i++) {
		if (rd[i].checked) return rd[i].value;
	}

	return null;
}

function setHiddenValue(hiddenId,hiddenValue){
	document.getElementById(hiddenId).value = hiddenValue;
}

function numericCheck(obj,allowOnlyNumeric) {

	var len  = obj.value.length;
	var lastChar = obj.value.charAt(len-1);
	if(allowOnlyNumeric){
		if( !(lastChar == '0' || lastChar == '1' || lastChar == '2' || lastChar == '3' ||
		    lastChar == '4' || lastChar == '5' || lastChar == '6' || lastChar == '7' ||
			lastChar == '8' || lastChar == '9') ) {
			obj.value = obj.value.substring(0, len-1);
		}
	}else{
			if(lastChar == '0' || lastChar == '1' || lastChar == '2' || lastChar == '3' ||
		    lastChar == '4' || lastChar == '5' || lastChar == '6' || lastChar == '7' ||
			lastChar == '8' || lastChar == '9' ) {
			obj.value = obj.value.substring(0, len-1);
			}
	}
}

function checkEmail(email) {
	if (!mailExp.test(email)) return false;

	return true;
}

function isEmpty(field){
var trimmedField=trimAndSetNullIfBlank(field);
if(trimmedField == null){
return true;
}
return false;
}


function isAlphabetical(field){
var re = new RegExp("^[a-zA-Z\u015E\u015F\u0130\u0131\u011E\u011F\u00DC\u00FC\u00D6\u00F6\u00C7\u00E7 ]{1,}$");
if (!field.match(re)){
return false;
}
return true;
}

function trimAndSetNullIfBlank(str)
{
    if(!str || typeof str != 'string'){
        return null;
    }else{
   	var trimmed =str.replace(/^[\s]+/,'').replace(/[\s]+$/,'').replace(/[\s]{2,}/g,' ');
   	if(trimmed == ""){
   	return null;
   	}
   	return trimmed;
   	}    
}
function trim(str){
 return str.replace(/^[\s]+/,'').replace(/[\s]+$/,'').replace(/[\s]{2,}/g,' ');
}

// trim for text fields
// unlike the version above (trim(str)), it does not trims the excessive white
// spaces in between the words
function trimText(txt) {
	var res = txt.replace(/^[\s]+/,'').replace(/[\s]+$/,'');

	return res;
}

function isAtSignOrTurkish(obj) {

	var len  = obj.value.length;
	var lastChar = obj.value.charAt(len-1);
	if( lastChar == '\u00fc' || lastChar == '\u00e7' || lastChar == '\u011f' || lastChar == '\u00f6' ||
	    lastChar == '\u00c7' || lastChar == '\u00dc' || lastChar == '\u0130' || lastChar == '\u0131' ||
		lastChar == '\u015e' || lastChar == '\u015f' || lastChar == '\u011e' || lastChar == '\u00d6' ) {
		obj.value = obj.value.substring(0, len-1);
	}
}

function isGsmPrefixExpression3(prefix){
	// 3 for 3-digit starting with 5
	var regExp = /^[5]{1}[0-9]{2}$/;
   	return regExp.test(prefix);
}

function isGsmExpression7(gsm){
	// just 7-digit number
	var regExp = /^[0-9]{7}$/;
   	return regExp.test(gsm);
}

function isGsmExpression10(gsm){
	// just 7-digit number
	var regExp = /^[0-9]{10}$/;
   	return regExp.test(gsm);
}

function isTCKimlikNoExpression(tcKimlikNo) {
   	return tcKimlikNoExp.test(tcKimlikNo);
}

function getDateString(){
	var currentDate = new Date();

	var day = currentDate.getDate();
	if(day < 10){
		day="0"+day;
	}

	var year = currentDate.getFullYear();

	var month = currentDate.getMonth() + 1;
	if(month < 10){
		month="0"+month;
	}

	return year+day+month;
}

function daysInFebruary (year){
 // February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}

function DaysArray(n) {
 for (var i = 1; i <= n; i++) {
  this[i] = 31
  if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
  if (i==2) {this[i] = 29}
   }
   return this
}

function isValidDate(dtStr) {
	var daysInMonth = DaysArray(12);
	var pos1=dtStr.indexOf('-');
	var pos2=dtStr.indexOf('-',pos1+1);

	var strDay=dtStr.substring(0,pos1);
	var strMonth=dtStr.substring(pos1+1,pos2);
	var strYear=dtStr.substring(pos2+1);

	var year = parseInt(strYear);

    var day = 0;
    if (strDay =='08') day = 8;
    else if (strDay =='09') day = 9;
    else day = parseInt(strDay);

	var month = 0;
    if (strMonth =='08') month = 8;
    else if (strMonth =='09') month = 9;
    else month = parseInt(strMonth);

	if (strMonth.length<1 || month<1 || month>12){
		return false
	}

	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		return false
	}

	return true
}

function cutWord(temp,strlen){

	tempstring = temp.value;
    if(tempstring.length > strlen ){
        temp.value = tempstring.substr(0,strlen);
        alert("Girilen de\u011fer " +strlen + " haneden fazla oldu\u011fu i\u00e7in " + temp.value + " olarak de\u011fi\u015ftirilmi\u015ftir!" );

    }
}

function testValid(formName){
	alert(document.getElementById(formName+':name').value);
}

function validateUserForm(dataFormName,checkCompany) {
	var reason="";
	
    if (!isEmpty(document.getElementById(dataFormName+':mail').value)) {
	    if (checkEmail(document.getElementById(dataFormName+':mail').value) == false) {
	        reason +="L\u00FCtfen 'E-Posta adresiniz' alan\u0131 i\u00E7in ge\u00E7erli bir e-posta adresi giriniz.\n";
	    }
    }
    
    
    if(checkCompany =='true'){
	    if (isEmpty( document.getElementById(dataFormName+':companyName').value)) {
	        reason +="L\u00FCtfen  '\u015Eirketinizin Ad\u0131' alan\u0131n\u0131 bo\u015F b\u0131rakmay\u0131n\u0131z.\n";
	        document.getElementById(dataFormName+':name').value= trim(document.getElementById(dataFormName+':name').value);
	    }
    
    }
    if (isEmpty( document.getElementById(dataFormName+':name').value)) {
        reason +="L\u00FCtfen  'Ad\u0131n\u0131z' alan\u0131n\u0131 bo\u015F b\u0131rakmay\u0131n\u0131z.\n";
        document.getElementById(dataFormName+':name').value= trim(document.getElementById(dataFormName+':name').value);
    }else{
    	if (!isAlphabetical(document.getElementById(dataFormName+':name').value)){
   		reason +="L\u00FCtfen 'Ad\u0131n\u0131z' alan\u0131n\u0131 alfabetik karakter giriniz.\n";
   		}
    }
     if (isEmpty(document.getElementById(dataFormName+':surname').value)) {
        reason +="L\u00FCtfen  'Soyad\u0131n\u0131z' alan\u0131n\u0131 bo\u015F b\u0131rakmay\u0131n\u0131z.\n";
        document.getElementById(dataFormName+':surname').value= trim(document.getElementById(dataFormName+':surname').value);
    }else{
    	if (!isAlphabetical(document.getElementById(dataFormName+':surname').value)){
   		reason +="L\u00FCtfen 'Soyad\u0131n\u0131z' alan\u0131n\u0131 alfabetik karakter giriniz.\n";
   		}
    }
    
    if (isEmpty(document.getElementById(dataFormName+':telNo').value)) {
     	reason +="L\u00FCtfen 'Cep Telefonunuz' alan\u0131n\u0131 bo\u015F b\u0131rakmay\u0131n\u0131z.\n";
     	document.getElementById(dataFormName+':telNo').value= trim(document.getElementById(dataFormName+':telNo').value);
    }else{
    	var re = new RegExp("53[0-9]{8}");
    	if (!document.getElementById(dataFormName+':telNo').value.match(re)){
   		reason +="L\u00FCtfen 'Cep Telefonunuz' alan\u0131n\u0131 '53XXXXXXXX' \u015Feklinde  giriniz.\n";
   		}
   	}
   	
   	if(checkCompany == 'false'){
   	
	   	if (document.getElementById(dataFormName+':isOwner').value == "-1") {
	     	reason +="L\u00FCtfen 'Bu hatt\u0131n sahibi siz misiniz?' alan\u0131 i\u00E7in de\u011Fer se\u00E7iniz.\n";
	    }
    }
   if(isEmpty(reason)){
   var source=document.forms["frmPreToPost"].elements["sourceEvent"];
   if (source) {
	   source.value="next";
	}
	   return true;
   }else{
   alert(reason);
   return false;
   }
}