///////////////////////////////
   ///						   ///
  /// 	Javascript functies   ///
 ///                         ///
///////////////////////////////


//Functie die zorgt dat een wachtwoord versleuteld verstuurd wordt
function createResponse(){
 document.getElementById( 'response' ).value = hex_md5( hex_md5( document.getElementById( 'password' ).value ) + ":" + document.getElementById( 'challenge' ).value );
  document.getElementById( 'password' ).value = "";
  document.getElementById( 'challenge' ).value = "";
  return true;
}

//Met deze functie kunnen we kijken of iets een functie is
function isFunction(a){
	if(typeof a == 'function'){
		return true;
	}
	else{
		return false;
	}
}

//Functie waarmee gecontroleerd kan worden of iets een object is
function isObject(a){
	if((typeof a == 'object' && !!a) || isFunction(a)){
		return true;
	}
	else{
		return false;
	}
}

function isString (a) {
	return typeof a == 'string';
}

function isNumber(a){
	return typeof a == 'number' && isFinite(a);
}

function canDelete(args, vraag){
	if(window.confirm (vraag) ){
		document.location = args;
	}
}

//Javascript functie om strings mee te trimmen
function trimAll(sString){
	while (sString.substring(0,1) == ' '){
		sString = sString.substring(1, sString.length);
	}
	while (sString.substring(sString.length-1, sString.length) == ' '){
		sString = sString.substring(0,sString.length-1);
	}
	
	return sString;
}


function isDate(DateToCheck){
if(DateToCheck==""){return true;}
						
	var m_strDate = FormatDate(DateToCheck);
	if(m_strDate==""){
		return false;
	}
	var m_arrDate = m_strDate.split("/");
	var m_DAY = m_arrDate[0];
	var m_MONTH = m_arrDate[1];
	var m_YEAR = m_arrDate[2];
		
	if(m_YEAR.length > 4){return false;}
					
	m_strDate = m_MONTH + "/" + m_DAY + "/" + m_YEAR;
	var testDate=new Date(m_strDate);
	if(testDate.getMonth()+1==m_MONTH){
		return true;
	} 
	else{
		return false;
	}
}
				
function FormatDate(DateToFormat,FormatAs){
	if(DateToFormat==""){return"";}
	if(!FormatAs){FormatAs="dd/mm/yyyy";}

	var strReturnDate;
	FormatAs = FormatAs.toLowerCase();
	DateToFormat = DateToFormat.toLowerCase();
	var arrDate
	var arrMonths = new Array("January","February","March","April","May","June","July","August","September","October","November","December");
	var strMONTH;
	var Separator;

	while(DateToFormat.indexOf("st")>-1){
		DateToFormat = DateToFormat.replace("st","");
	}

	while(DateToFormat.indexOf("nd")>-1){
		DateToFormat = DateToFormat.replace("nd","");
	}

	while(DateToFormat.indexOf("rd")>-1){
		DateToFormat = DateToFormat.replace("rd","");
	}

	while(DateToFormat.indexOf("th")>-1){
		DateToFormat = DateToFormat.replace("th","");
	}

	if(DateToFormat.indexOf(".")>-1){
		Separator = ".";
	}

	if(DateToFormat.indexOf("-")>-1){
		Separator = "-";
	}


	if(DateToFormat.indexOf("/")>-1){
		Separator = "/";
	}

	if(DateToFormat.indexOf(" ")>-1){
		Separator = " ";
	}

	arrDate = DateToFormat.split(Separator);
	DateToFormat = "";
	for(var iSD = 0;iSD < arrDate.length;iSD++){
		if(arrDate[iSD]!=""){
			DateToFormat += arrDate[iSD] + Separator;
		}
	}
	DateToFormat = DateToFormat.substring(0,DateToFormat.length-1);
	arrDate = DateToFormat.split(Separator);

	if(arrDate.length < 3){
		return "";
	}

	var DAY = arrDate[0];
	var MONTH = arrDate[1];
	var YEAR = arrDate[2];




	if(parseFloat(arrDate[1]) > 12){
		DAY = arrDate[1];
		MONTH = arrDate[0];
	}

	if(parseFloat(DAY) && DAY.toString().length==4){
		YEAR = arrDate[0];
		DAY = arrDate[2];
		MONTH = arrDate[1];
	}


	for(var iSD = 0;iSD < arrMonths.length;iSD++){
		var ShortMonth = arrMonths[iSD].substring(0,3).toLowerCase();
		var MonthPosition = DateToFormat.indexOf(ShortMonth);
		if(MonthPosition > -1){
			MONTH = iSD + 1;
			if(MonthPosition == 0){
				DAY = arrDate[1];
				YEAR = arrDate[2];
			}
			break;
		}
	}

	var strTemp = YEAR.toString();
	if(strTemp.length==2){

		if(parseFloat(YEAR)>40){
			YEAR = "19" + YEAR;
		}
		else{
			YEAR = "20" + YEAR;
		}

	}


	if(parseInt(MONTH)< 10 && MONTH.toString().length < 2){
		MONTH = "0" + MONTH;
	}
	if(parseInt(DAY)< 10 && DAY.toString().length < 2){
		DAY = "0" + DAY;
	}
	switch (FormatAs){
		case "dd/mm/yyyy":
			return DAY + "/" + MONTH + "/" + YEAR;
		case "mm/dd/yyyy":
			return MONTH + "/" + DAY + "/" + YEAR;
		case "dd/mmm/yyyy":
			return DAY + " " + arrMonths[MONTH -1].substring(0,3) + " " + YEAR;
		case "mmm/dd/yyyy":
			return arrMonths[MONTH -1].substring(0,3) + " " + DAY + " " + YEAR;
		case "dd/mmmm/yyyy":
			return DAY + " " + arrMonths[MONTH -1] + " " + YEAR;	
		case "mmmm/dd/yyyy":
			return arrMonths[MONTH -1] + " " + DAY + " " + YEAR;
		case "yyyymmdd":
			return YEAR + "" + MONTH + "" + DAY;
		}
		

		return DAY + "/" + strMONTH + "/" + YEAR;;

} //End Function

function isEmail(argvalue) {

  if (argvalue.indexOf(" ") != -1)
    return false;
  else if (argvalue.indexOf("@") == -1)
    return false;
  else if (argvalue.indexOf("@") == 0)
    return false;
  else if (argvalue.indexOf("@") == (argvalue.length-1))
    return false;

  // arrayString = argvalue.split("@"); (works only in netscape3 and above.)
  var retSize = customSplit(argvalue, "@", "arrayString");

  if (arrayString[1].indexOf(".") == -1)
    return false;
  else if (arrayString[1].indexOf(".") == 0)
    return false;
  else if (arrayString[1].charAt(arrayString[1].length-1) == ".") {
    return false;
  }

  return true;

}

function customSplit(strvalue, separator, arrayName) {
  var n = 0;

  if (separator.length != 0) {
    while (strvalue.indexOf(separator) != -1) {
      eval("arr"+n+" = strvalue.substring(0, strvalue.indexOf(separator));");
      strvalue = strvalue.substring(strvalue.indexOf(separator)+separator.length,
          strvalue.length+1);
      n++;
    }
    eval("arr" + n + " = strvalue;");
    arraySize = n+1;
  }
  else {
    for (var x = 0; x < strvalue.length; x++) {
      eval("arr"+n+" = \"" + strvalue.substring(x, x+1) + "\";");
      n++;
    }
    arraySize = n;
  }

  eval(arrayName + " = new makeArray(arraySize);");

  for (var i = 0; i < arraySize; i++)
    eval(arrayName + "[" + i + "] = arr" + i + ";");

  return arraySize;
}

function makeArray(IntarrSize) {

  for (var n = 0; n < IntarrSize; n++)
    this[n] = "";

  return this;

}

//Maandnummer naar naam omzetten
function maandnummer2naam (nummer) {
	//Zorgen dat we zeker hierna met een string te maken hebben
	nummer = String(nummer);
	
	//Kijken of we met een voorloop 0 te maken hebben	
	if(nummer.substr(0,1) == "0"){
		nummer = nummer.substr(1);
	}
	
	//Kijken welke maan het dan is
	switch (nummer) {
		case "1":
			naam = "Januari";
			break;
		case "2":
			naam = "Februari";
			break;
		case "3":
			naam = "Maart";
			break;
		case "4":
			naam = "April";
			break;
		case "5":
			naam = "Mei";
			break;
		case "6":
			naam = "Juni";
			break;
		case "7":
			naam = "Juli";
			break;
		case "8":
			naam = "Augustus";
			break;
		case "9":
			naam = "September";
			break;
		case "10":
			naam = "Oktober";
			break;
		case "11":
			naam = "November";
			break;
		case "12":
			naam = "December";
			break;
	}
	
	return naam;
}