function isValidForm(frm){
 var act=0;
 for(i=0;i<=12;i++)
  eval("act+=document.getElementById('act"+i+"').checked?1:0")
 if(document.getElementById('ctl00_cphMainContent_achternaam').value==""){
  alert("U dient de achternaam in te vullen.")
  document.getElementById('ctl00_cphMainContent_achternaam').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_voornaam').value==""){
  alert("U dient de roepnaam in te vullen.")
  document.getElementById('ctl00_cphMainContent_voornaam').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_voorletters').value==""){
  alert("U dient de voorletters in te vullen.")
  document.getElementById('ctl00_cphMainContent_voorletters').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_geboortedatum').value==""
	|| document.getElementById('ctl00_cphMainContent_geboortedatum').value=="dd-mm-jjjj"){
  alert("U dient de geboortedatum in te vullen.")
  document.getElementById('ctl00_cphMainContent_geboortedatum').focus()
  return false
 }
 if(!document.getElementById('ctl00_cphMainContent_lidmaatschap_0').checked
	 &&!document.getElementById('ctl00_cphMainContent_lidmaatschap_1').checked
	 &&!document.getElementById('ctl00_cphMainContent_lidmaatschap_2').checked){
  alert("U dient het gewenste lidmaatschapstype te kiezen.")
  document.getElementById('ctl00_cphMainContent_lidmaatschap_0').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_straat').value==""){
  alert("U dient de straat+huisnr. in te vullen.")
  document.getElementById('ctl00_cphMainContent_straat').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_huisnummer').value==""){
  alert("U dient het huisnummer in te vullen.")
  document.getElementById('ctl00_cphMainContent_huisnummer').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_postcode').value==""){
  alert("U dient de postcode in te vullen.")
  document.getElementById('ctl00_cphMainContent_postcode').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_plaats').value==""){
  alert("U dient de woonplaats in te vullen.")
  document.getElementById('ctl00_cphMainContent_plaats').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_email').value==""){
  alert("U dient het emailadres in te vullen.")
  document.getElementById('ctl00_cphMainContent_email').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_telefoonnr').value==""){
  alert("U dient het telefoonnr. in te vullen.")
  document.getElementById('ctl00_cphMainContent_telefoonnr').focus()
  return false
 }
if(hockeyAge<18){
 if(!document.getElementById('ctl00_cphMainContent_ouder_geslacht_0').checked
	 && !document.getElementById('ctl00_cphMainContent_ouder_geslacht_1').checked){
  alert("U dient uw geslacht in te vullen.")
  document.getElementById('ctl00_cphMainContent_ouder_geslacht_0').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_ouder_voorletters').value==""){
  alert("U dient uw voorletters in te vullen.")
  document.getElementById('ctl00_cphMainContent_ouder_voorletters').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_ouder_achternaam').value==""){
  alert("U dient uw achternaam in te vullen.")
  document.getElementById('ctl00_cphMainContent_ouder_achternaam').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_ouder_straat').value==""){
  alert("U dient uw straat+huisnr. in te vullen.")
  document.getElementById('ctl00_cphMainContent_ouder_straat').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_ouder_postcode').value==""){
  alert("U dient uw postcode in te vullen.")
  document.getElementById('ctl00_cphMainContent_ouder_postcode').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_ouder_plaats').value==""){
  alert("U dient uw woonplaats in te vullen.")
  document.getElementById('ctl00_cphMainContent_ouder_plaats').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_ouder_email').value==""){
  alert("U dient uw emailadres in te vullen.")
  document.getElementById('ctl00_cphMainContent_ouder_email').focus()
  return false
 }
 if(document.getElementById('ctl00_cphMainContent_ouder_telefoonnr').value==""){
  alert("U dient uw telefoonnr. in te vullen.")
  document.getElementById('ctl00_cphMainContent_ouder_telefoonnr').focus()
  return false
 }
}
 if(act<2){
  alert("U moet minimaal 2 activiteiten selecteren.")
  frm.act0.focus()
  return false
 }
 return true;
}


function Capitalize(fld){
	fld.value=fld.value.toUpperCase();
	return true;
}
function CapitalizeDot(fld){
	fld.value=fld.value.toUpperCase();
	return true;
}
function ClearExample(fld,txt){
	if(fld.value==txt){
		fld.value="";
		fld.className="";
		fld.select();
	}else{
		if(fld.value==""){
			fld.value=txt;
			fld.className="example";
		}
	}
	return true;
}
function CustomXValidator(source, arg){
  var valid=true;
//  if(frm.geslacht.value==""){valid=false};
  arg.IsValid=valid;
 }
var dtCh= "-";
var minYear=1900;
var maxYear=2100;
var seizoen=2010;
var hockeyAge=0;

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 isValidDate1(fld){

	var dtStr = fld.value;
	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("Ongeldig datumformaat.\nVoer de datum zo in:\ndd-mm-jjjj")
		fld.focus();
		fld.select();
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Ongeldige maand.\nVoer de datum zo in:\ndd-mm-jjjj")
		fld.focus();
		fld.select();
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Ongeldige dag.\nVoer de datum zo in:\ndd-mm-jjjj")
		fld.focus();
		fld.select();
		return false
	}
//	if (strYear.length = 2){if(year<30){ year+=2000 }else{ year+=1900 };strYear=year;fld.value=strDay+dtCh+strMonth+dtCh+strYear;}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Ongeldig jaar, voer een jaartal van 4 cijfers in tussen "+minYear+" en "+maxYear)
		fld.focus();
		fld.select();
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Ongeldig datumformaat.\nVoer de datum zo in:\ndd-mm-jjjj")
		fld.focus();
		fld.select();
		return false
	}
}

function isValidDate(fld){

  var showform=true;

  document.getElementById("leeftijd").innerText="";
  document.getElementById("categorie").innerHTML="&nbsp;";
  document.getElementById('ctl00_cphMainContent_lidmaatschap_2').disabled=true
  //document.forms[0].ctl00$cphMainContent$lidmaatschap[2].disabled=true;

	var dtStr = fld.value;
	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){
    hideForm();
		alert("Ongeldig datumformaat.\nVoer de datum zo in:\ndd-mm-jjjj")
		fld.focus();
		fld.select();
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
    hideForm();
		alert("Ongeldige maand.\nVoer de datum zo in:\ndd-mm-jjjj")
		fld.focus();
		fld.select();
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
    hideForm();
		alert("Ongeldige dag.\nVoer de datum zo in:\ndd-mm-jjjj")
		fld.focus();
		fld.select();
		return false
	}
//	if (strYear.length = 2){if(year<30){ year+=2000 }else{ year+=1900 };strYear=year;fld.value=strDay+dtCh+strMonth+dtCh+strYear;}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
    hideForm();
		alert("Ongeldig jaar, voer een jaartal van 4 cijfers in tussen "+minYear+" en "+maxYear)
		fld.focus();
		fld.select();
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
    hideForm();
		alert("Ongeldig datumformaat.\nVoer de datum zo in:\ndd-mm-jjjj")
		fld.focus();
		fld.select();
		return false
	}
	
if(!showform){
  document.getElementById("categorie").innerText="Voer een geldige geboortedatum in.";
}else{

  if(month>=10){year++}
  hockeyAge=seizoen-year;
  var currentAge=year*400+month*32+day;
  
  var birthDate=new Date();
  birthDate.setFullYear(year+6,month-1,day);
  var today = new Date();

  document.getElementById("leeftijd").innerText=hockeyAge+" jaar (per 1 okt. "+seizoen+")";

	//alert(hockeyAge);

  var msg="";
  var surName=document.getElementById('ctl00_cphMainContent_voornaam').value;
  if(hockeyAge<6){
    msg=surName+" is helaas nog niet oud genoeg om zich in te schrijven";
    showform=false;
  }else{
    if(hockeyAge>=25){
      for(i=1;i<=8;i++){
        document.getElementById("ouder"+i).style.display="none";
      }
    }else{
      for(i=1;i<=8;i++){
        document.getElementById("ouder"+i).style.display="inline";
      }
    }
    if(hockeyAge<8){
      msg=surName+" komt in aanmerking voor de BenjaMini's (F junioren)";
    }else{
      if(hockeyAge<10){
        msg=surName+" komt in aanmerking voor de Mini's (E junioren)";
      }else{
        if(hockeyAge<12){
          msg=surName+" komt in aanmerking voor de D junioren";
        }else{
          if(hockeyAge<14){
            msg=surName+" komt in aanmerking voor de C junioren";
          }else{
            if(hockeyAge<16){
              msg=surName+" komt in aanmerking voor de B junioren";
            }else{
              if(hockeyAge<18){
                msg=surName+" komt in aanmerking voor de A junioren";
              }else{
                if(hockeyAge<25){
                  msg="Je komt in aanmerking voor de senioren (studententarief)";
                }else{
                  if(hockeyAge<35){
                    msg="Je komt in aanmerking voor de senioren";
                  }else{
                    document.getElementById('ctl00_cphMainContent_lidmaatschap_2').disabled=false;
                    if(document.getElementById('ctl00_cphMainContent_geslacht2').checked){
                      msg="U komt in aanmerking voor de senioren, trimhockey of dinsdagveterinnen";
                    }else{
                      msg="U komt in aanmerking voor de senioren, trimhockey of veteranen";
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  document.getElementById("categorie").innerText=msg;
}
hideForm(showform);

return true
}

function hideForm(showform){
  document.getElementById("Form2").style.display=(showform)?"inline":"none";
}