var manfld = ['uxFirstname','uxLastname','uxNameOnCard', 'uxAddress1', 'uxZipcode', 'uxCity', 'uxEmail'];
var translation = ['First name','Last name','Όνομα στην Κάρτα', 'Διεύθυνση', 'Τ.Κ.', 'Πόλη', 'Email'];
//  Main entry
function validate() {
    var frm = document.issuingForm;
    var forgot = '';
    for ( i=0; i<manfld.length; i++ ) {
        if ( frm.elements[manfld[i]].value.length == 0 ) {
            
            forgot += '- ' + translation[i] + '\n';
        }
    }
    
    //  Cardtype check: if Yought card (4) then no studies at check
    if (frm.elements['uxCardtype'].value != 4)
    {
        if ( frm.elements['uxInstitute'].value.length == 0 ) {
            forgot += '- Εκπαιδευτικό Ίδρυμα \n';
        }
		if (frm.elements['uxCardtype'].value == 1)
		{
			if (frm.elements['uxConfirm'].checked==false)
			{
			forgot += '- Πρέπει να επιβεβαιώσετε ότι είσαστε φοιτητής / τρια για να συνεχίσετε \n';
			}
		}
		if (frm.elements['uxCardtype'].value == 3)
		{
			if (frm.elements['uxConfirm'].checked==false)
			{
			forgot += '- Πρέπει να επιβεβαιώσετε ότι είσαστε καθηγητής / τρια για να συνεχίσετε \n';
			}
		}
    }
    
    // Correct emailaddress check
    if ( frm.elements['uxEmail'].value.length != 0 ) {
        if( !/^.+\@.+\..+$/gi.test( frm.elements['uxEmail'].value ) ) {
            forgot += '-  email \n';
        }
    }
    
    if ( frm.elements['uxDateOfBirthDay'].value.length == 0 || frm.elements['uxDateOfBirthMonth'].value.length == 0 || frm.elements['uxDateOfBirthYear'].value.length == 0 ) {
        forgot += '- Ημ/νια Γέννησης \n';
    } else {
        var date = frm.elements['uxDateOfBirthDay'].value +'/'+ frm.elements['uxDateOfBirthMonth'].value +'/'+ frm.elements['uxDateOfBirthYear'].value;
        forgot += isDate( date );
    }
    
	if (frm.elements['uxAccept'].checked==false)
	{
		forgot += '- Πρέπει να αποδεχτείτε τους όρους και κανονισμούς για να συνεχίσετε. \n';
	}
	
      if ( forgot == '' )
        frm.submit();
    else
        alert( 'Παρακαλώ συμπληρώστε:\n' + forgot )
}

function validate2() {
    var frm = document.issuingForm;
    var forgot = '';
    for ( i=0; i<manfld.length; i++ ) {
        if ( frm.elements[manfld[i]].value.length == 0 ) {
            
            forgot += '- ' + translation[i] + '\n';
        }
    }
    
    //  Cardtype check: if Yought card (4) then no studies at check
    if (frm.elements['uxCardtype'].value != 4)
    {
        if ( frm.elements['uxInstitute'].value.length == 0 ) {
            forgot += '- Εκπαιδευτικό Ίδρυμα \n';
        }

    }
    
    // Correct emailaddress check
    if ( frm.elements['uxEmail'].value.length != 0 ) {
        if( !/^.+\@.+\..+$/gi.test( frm.elements['uxEmail'].value ) ) {
            forgot += '-  email \n';
        }
    }
    
    if ( frm.elements['uxDateOfBirthDay'].value.length == 0 || frm.elements['uxDateOfBirthMonth'].value.length == 0 || frm.elements['uxDateOfBirthYear'].value.length == 0 ) {
        forgot += '- Ημ/νια Γέννησης \n';
    } else {
        var date = frm.elements['uxDateOfBirthDay'].value +'/'+ frm.elements['uxDateOfBirthMonth'].value +'/'+ frm.elements['uxDateOfBirthYear'].value;
        forgot += isDate( date );
    }
    
	if (frm.elements['uxAccept'].checked==false)
	{
		forgot += '- Πρέπει να αποδεχτείτε τους όρους και κανονισμούς για να συνεχίσετε. \n';
	}
	
      if ( forgot == '' )
        frm.submit();
    else
        alert( 'Παρακαλώ συμπληρώστε:\n' + forgot )
}

//  Set name on card
function setNoc(fN, mN, lN, noc) {
    var v='',m ='',l='',b;
    b = false;
    if (fN.length > 0) {
        v = fN.substring(0,1) + '.';
    }
    if (mN.length > 0) {
        if (v.length > 0)
        m += mN.substring(0,1) + '.';
        for (i=0; i < mN.length; i++) {
                if (b) {
                    m += mN.substring(i,i+1) + '.';
                    b = false;
                }
                if (mN.substring(i,i+1) == ' ')
                    b = true;
        }
    }
    if (lN.length > 0) {
        l = lN;
        if (v.length > 0 || m.length > 0)
        l += ', '
    }  
    noc.value = l + v + m;
}

// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

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 isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		return '- The date format should be : dd/mm/yyyy';
	}
	if (strMonth.length<1 || month<1 || month>12){
		return '- Please enter a valid month';
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		return '- Please enter a valid day';
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		return '- Please enter a valid 4 digit year between '+minYear+' and '+maxYear;
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		return '- Please enter a valid date';
	}
    return '';
}

function checkLogin()
{
	var forgot = '';
	if (document.LoginFrm.username.value !='verification')
	{
		forgot+= 'Έχετε δηλώσει λάθος username! \n';
		document.LoginFrm.username.focus();

	}
	if (document.LoginFrm.password.value !='isic0nline')
	{
		forgot+= 'Έχετε δηλώσει λάθος password! \n';
		document.LoginFrm.password.focus();

	}
	if ( forgot == '' )
        return true;
    else
	{  alert(forgot );
		return false;

	}
}