// JavaScript Document
//_________________________________________________________
//Formvalidatie. Controle of alle verplichte velden zijn ingevuld.
//Vergelijk alle elementen van het form met de verplichte velden in de array!
function formValidatorTextNum(requiredTxtFields, requiredNumFields, dateFields, emailField, checkBoxes, form){
	var dml=document.forms[form];
	var x=0;
	//Controle op lege textvelden
	if (requiredTxtFields!="") {
		var aTxtFields= requiredTxtFields.split(", ");
		for (x=0; x<aTxtFields.length;x++) {
			var varFieldToCheckIfEmpty = eval("dml."+aTxtFields[x]+".value");
			if (varFieldToCheckIfEmpty==""){
				alert("U heeft veld "+(aTxtFields[x].substring(3))+" niet ingevuld!");
				eval("dml."+aTxtFields[x]+".focus()");
				return false;
			}
		}
	}

	//Controle op numerieke velden
	if (requiredNumFields!="") {
		var aNumFields= requiredNumFields.split(", ");
		x=0;
		for (x=0; x<aNumFields.length;x++) {
			var elementValue=eval("dml."+aNumFields[x]+".value");
			if(elementValue!=""+parseFloat(elementValue)) {
				//geen numerieke waarde ingevoerd
				alert("U heeft voor veld "+(aNumFields[x].substring(3))+" geen numerieke waarde ingevoerd!");
				eval("dml."+aNumFields[x]+".focus()");
				return false;
			}
			if(isNaN(parseInt(elementValue))) {
				//geen numerieke waarde ingevoerd
				alert("U heeft voor veld "+(aNumFields[x].substring(3))+" geen numerieke waarde ingevoerd!");
				eval("dml."+aNumFields[x]+".focus()");
				return false;
			}
			if(parseInt(elementValue)<0) {
				//geen negatieve waarde 
				alert("U heeft voor veld "+(aNumFields[x].substring(3))+" geen positieve waarde ingevoerd!");
				eval("dml."+aNumFields[x]+".focus()");
				return false;
			}
		}
	}
	
	//Controle op datumvelden
	if (dateFields!="") {
		var aDateFields=dateFields.split(", ");
		x=0;
		for (x=0; x<aDateFields.length;x++) {
			var aDateFieldsItems=aDateFields[x].split("-");
			var dateToCheck=eval("dml."+aDateFieldsItems[0]+".value")+"-"+eval("dml."+aDateFieldsItems[1]+".value")+"-"+eval("dml."+aDateFieldsItems[2]+".value");
			if (isDate(dateToCheck)==false){
				return false;
		 }
		}
	}
	
	//Controle op email adressen
	if (emailField!="") {
		var aMailFields=emailField.split(", ");
		x=0;
		for (x=0; x<aMailFields.length;x++) {
			var mailToCheck=eval("dml."+aMailFields[x]+".value");
			if (isValidEmail(mailToCheck, true)==false){
				alert("U heeft geen geldig e-mail adres ingevoerd: "+mailToCheck);
				eval("dml."+aMailFields[x]+".focus()");
				return false;
		 }
		}
	}
	if (checkBoxes!="") {
		var aCheckBoxes=checkBoxes.split(", ");
		x=0;
		for (x=0; x<aCheckBoxes.length;x++) {
			var checkedValue=eval("dml."+aCheckBoxes[x]+".checked");
			if (checkedValue==false){
				alert("U moet akkoord gaan met de "+(aCheckBoxes[x].substring(3))+" van de Intermodale Kaart");
				return false;
		 }
		}
	}
}
//_________________________________________________________
//Datum validatie
var dtCh= "-";
var minYear=1900;
var maxYear=2100;
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){
		alert("Vul de datum in deze volgorde in: dd-mm-jjjj")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("In het vakje voor de maand een getal tussen 1 en 12 invoeren.")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("In het vakje voor de dag een geldig getal invoeren (1 to 31, afhankelijk van de maand. Let op! Februari heeft maar 28 dagen).")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Graag een jaartal opgeven van vier cijfers, tussen "+minYear+" en "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Geef een geldige datum op.")
		return false
	}
return true
}
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
}
//_________________________________________________________
//Email validatie
function isValidEmail(email, required) {
    if (required==undefined) {   // if not specified, assume it's required
        required=true;
    }
    if (email==null) {
        if (required) {
            return false;
        }
        return true;
    }
    if (email.length==0) {  
        if (required) {
            return false;
        }
        return true;
    }
    if (! allValidChars(email)) {  // check to make sure all characters are valid
        return false;
    }
    if (email.indexOf("@") < 1) { //  must contain @, and it must not be the first character
        return false;
    } else if (email.lastIndexOf(".") <= email.indexOf("@")) {  // last dot must be after the @
        return false;
    } else if (email.indexOf("@") == email.length) {  // @ must not be the last character
        return false;
    } else if (email.indexOf("..") >=0) { // two periods in a row is not valid
	return false;
    } else if (email.indexOf(".") == email.length) {  // . must not be the last character
	return false;
    }
    return true;
}
function allValidChars(email) {
  var parsed = true;
  var validchars = "abcdefghijklmnopqrstuvwxyz0123456789@.-_";
  for (var i=0; i < email.length; i++) {
    var letter = email.charAt(i).toLowerCase();
    if (validchars.indexOf(letter) != -1)
      continue;
    parsed = false;
    break;
  }
  return parsed;
}
//_________________________________________________________
//Cancelbutton. Zorgt ervoor dat de asp functie wordt getriggerd waarmee bepaalde waarden worden gereset!
function submitFormCancel(cancelValue, cancelVariable, form){
	eval("window.document."+form+"."+cancelVariable+".value = '"+cancelValue+"'");
	eval("document."+form+".submit()");
}
//_________________________________________________________
//Scriptje die het formulier checkt + klaarmaakt voor verzenden.
function DoctorElements()
{
	 var i,j;
	 for (i=0; i < document.forms[0].elements.length-1; i++)
			switch (String(document.forms[0].elements[i].name).substring(0,3))
			{
				 case "chk":
						if (document.forms[0].elements[i].checked)
							 document.forms[0].elements[i].value = "Ja";
						else {
							 document.forms[0].elements[i].checked = true;
							 document.forms[0].elements[i].value = "Nee";
						}
						break;
			}
}