var nbsp = 160;		
var node_text = 3;	
var emptyString = /^\s*$/ ;
var global_valfield;	
function isDate(valfield, infofield, required) 
{  
 var tfld = trim(valfield.value);

 if(tfld==""){
	 msg (infofield, "warn", "");
	return true;
 }else {
 var rExp = /^\d{2}\-\d{2}\-\d{4}$/;
 if (!rExp.test(tfld)) {
 msg (infofield, "error", "Ongeldige datum");
 setfocus(valfield);
 return false;
} }
msg (infofield, "warn", "");
	return true;


}




function trim(str)
{
  return str.replace(/^\s+|\s+$/g, '');
}


function setFocusDelayed()
{
  global_valfield.focus();
}

function setfocus(valfield)
{

  global_valfield = valfield;
  setTimeout( 'setFocusDelayed()', 100 );
}


function msg(fld,     
             msgtype, 
             message) 
{
  
  var dispmessage;
  if (emptyString.test(message)) 
    dispmessage = String.fromCharCode(nbsp);    
  else  
    dispmessage = message;

  var elem = document.getElementById(fld);
  elem.firstChild.nodeValue = dispmessage;  
  
  elem.className = msgtype;  
}
var proceed = 2;  


function commonCheck    (valfield,  
                         infofield, 
                         required)  
{
  if (!document.getElementById) 
    return true;  
  var elem = document.getElementById(infofield);
  if (!elem.firstChild) return true;  
  if (elem.firstChild.nodeType != node_text) return true;  

  if (emptyString.test(valfield.value)) {
    if (required) {
      msg (infofield, "error", "Verplicht!");  
      setfocus(valfield);
      return false;
    }
    else {
      msg (infofield, "warn", "");  
      return true;  
    }
  }
  return proceed;
}


function validatePostalCode(valfield, infofield, required) 
{ 
  var stat = commonCheck (valfield, infofield, true);
  if (stat != proceed) return stat;
  
 var tfld = trim(valfield.value);
 tfld = tfld.toUpperCase();

 var rExp = /^[1-8]{1}[0-9]{3}[A-Z]{2}$/;
 if (!rExp.test(tfld)) {
 msg (infofield, "error", "Ongeldige postcode");
 setfocus(valfield);
 return false;
} 
msg (infofield, "warn", "");
	return true;


}

function validateHoofdcategorie(valfield, infofield, required) 
{ 


  var stat = commonCheck (valfield, infofield, true);
  if (stat != proceed) return stat;
  

    if (valfield.value=="0") {
    msg (infofield, "error", "Verplicht!");
    setfocus(valfield);
    return false;
  }
  msg (infofield, "warn", "");
	return true;
}

function validateType(valfield, infofield, required) 
{ 


  var stat = commonCheck (valfield, infofield, true);
  if (stat != proceed) return stat;
  

    if (valfield.value=="Vul een type in") {
    msg (infofield, "error", "Verplicht!");
    
    return false;
  }
  msg (infofield, "warn", "");
	return true;
}


function validateUrl(valfield1, valfield2, infofield, required)

{   if(valfield2.value.length==0){


        var RegexUrl = /(http):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?(.pdf)/

		if (!RegexUrl.test(valfield1.value)) {
    		msg (infofield, "error", 'Geen geldige url');
    		setfocus(valfield1);
    		return false;
		}
		
}
		
    	msg (infofield, "warn", "");
  		return true;
		

}




function validateWaarde(valfield1, valfield2, infofield, required) 
{  if (valfield1.value=="0") {
		 if((valfield2.value==null)||
			  (valfield2.value.length==0)) {

    msg (infofield, "error", "Verplicht!");
    setfocus(valfield1);
    return false;
  }}
  msg (infofield, "warn", "");
	return true;
}


function validateFirma(valfield1, valfield2, infofield, required) 
{  if (valfield1.value=="0") {
		 if((valfield2.value==null)||
			  (valfield2.value.length==0)) {

    msg (infofield, "error", "Maak een selectie of voeg een nieuwe firma toe");
    setfocus(valfield1);
    return false;
  }}
  msg (infofield, "warn", "");
	return true;
}


function validateGroep(valfield, infofield, required) 
{ 


  var stat = commonCheck (valfield, infofield, true);
  if (stat != proceed) return stat;
  
  var tfld = trim(valfield.value);
    if (tfld=="0") {
    msg (infofield, "error", "Maak een selectie");
    setfocus(valfield);
    return false;
  }
  msg (infofield, "warn", "");
	return true;
}

 
function validatePresent(valfield,   
                         infofield ) 
{
  var stat = commonCheck (valfield, infofield, true);
  if (stat != proceed) return stat;

  msg (infofield, "warn", "");  
  return true;

}

function validateEmail  (valfield,   
                         infofield,  
                         required)  
{
  var stat = commonCheck (valfield, infofield, required);
  if (stat != proceed) return stat;

  var tfld = trim(valfield.value);  
  var email = /^[^@]+@[^@.]+\.[^@]*\w\w$/  ;
  if (!email.test(tfld)) {
    msg (infofield, "error", "Ongeldig emailadres");
    setfocus(valfield);
    return false;
  }

  var email2 = /^[A-Za-z][\w.-]+@\w[\w.-]+\.[\w.-]*[A-Za-z][A-Za-z]$/  ;
  if (!email2.test(tfld)) 
    msg (infofield, "warn", "Ongebruikelijk emailadres - controleer of dit correct is");
  else
    msg (infofield, "warn", "");
  return true;
}



function validateTelnr  (valfield,   
                         infofield, 
                         required)   
{
  var stat = commonCheck (valfield, infofield, required);
  if (stat != proceed) return stat;

  var tfld = trim(valfield.value);  
  var telnr = /^\+?[0-9 ()-]+[0-9]$/  ;
  if (!telnr.test(tfld)) {
    msg (infofield, "error", "ERROR: not a valid telephone number. Characters permitted are digits, space ()- and leading +");
    setfocus(valfield);
    return false;
  }

  var numdigits = 0;
  for (var j=0; j<tfld.length; j++)
    if (tfld.charAt(j)>='0' && tfld.charAt(j)<='9') numdigits++;

  if (numdigits<6) {
    msg (infofield, "error", "ERROR: " + numdigits + " digits - too short");
    setfocus(valfield);
    return false;
  }

  if (numdigits>14)
    msg (infofield, "warn", numdigits + " digits - check if correct");
  else { 
    if (numdigits<10)
      msg (infofield, "warn", "Only " + numdigits + " digits - check if correct");
    else
      msg (infofield, "warn", "");
  }
  return true;
}

function validateAge    (valfield,  
                         infofield, 
                         required)  
{
  var stat = commonCheck (valfield, infofield, required);
  if (stat != proceed) return stat;

  var tfld = trim(valfield.value);
  var ageRE = /^[0-9]{1,3}$/
  if (!ageRE.test(tfld)) {
    msg (infofield, "error", "ERROR: not a valid age");
    setfocus(valfield);
    return false;
  }

  if (tfld>=200) {
    msg (infofield, "error", "ERROR: not a valid age");
    setfocus(valfield);
    return false;
  }

  if (tfld>110) msg (infofield, "warn", "Older than 110: check correct");
  else {
    if (tfld<7) msg (infofield, "warn", "Bit young for this, aren't you?");
    else        msg (infofield, "warn", "");
  }
  return true;
}