//##### Email check ###########################################################################################3

function isValidEmail(txt)
{
	  var objRegExp  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;


      //check for valid email
     if(objRegExp.test(txt)){
           return true;
     }
    else{
      return false;
       }
}



//##### elf_proef ###########################################################################################3

function elf_proef(nummer_voor_11_proef) {
	// verwijder alle tekens die geen cijfers zijn
	
	//postbank nummers moeten met een P beginnen en worden verder niet gecontroleerd
	if(nummer_voor_11_proef.charAt(0) == "p" || nummer_voor_11_proef.charAt(0) == "P")
		{
		return true;
		}
	else
		{

			nummer_voor_11_proef=nummer_voor_11_proef.replace(/\D/, "");
			aantal_tekens=nummer_voor_11_proef.length;
			var som=0;
			// loop door de 9 cijfers met de 11 proef formule
			for (b=1; b<10; b++) {
				getal=nummer_voor_11_proef.charAt(b-1);
				som+=getal*(10-b);
			} 
			
			// geef resultaat van check terug
			if (som % 11==0 && aantal_tekens==9 && som > 0) {
				//alert("ok");
				return true;
			} else {
				//alert("bank fout");
				return false;
				
			}
		}
}


//##### elf_proef sofinummer ###########################################################################################3

function elf_proef_sofi(nummer_voor_11_proef_sofi) {
	// verwijder alle tekens die geen cijfers zijn
	nummer_voor_11_proef_sofi=nummer_voor_11_proef_sofi.replace(/\D/, "");
	aantal_tekens=nummer_voor_11_proef_sofi.length;
	var som=0;
	// loop door de 9 cijfers met de 11 proef formule
	for (s=1; s<10; s++) {
		getal=nummer_voor_11_proef_sofi.charAt(s-1);
		if(s == 9)
			{
				som+=getal*(-1);
			}
		else
			{
				som+=getal*(10-s);
			}
	} 
	
	// geef resultaat van check terug
	if (som % 11==0 && aantal_tekens==9 && som > 0) {
		//alert("ok");
		return true;
	} else {
		//alert("bank fout");
		return false;
		
	}
	
}




//##### datum controle ###########################################################################################3


/**
 * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
// 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 strMonth=dtStr.substring(pos1+1,pos2)
	var strDay=dtStr.substring(0,pos1)
	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("De datum moet deze notatie hebben : dd-mm-jjjj")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Vul een geldige maand in a.u.b.")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Vul een geldige dag in a.u.b.")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Vul a.u.b. een geldig jaartal in 4 tekens tussen "+minYear+" en "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Vul a.u.b. een geldige datum in")
		return false
	}
return true
}


/*
function ValidateForm(){
	var dt=document.frmSample.txtDate
	if (isDate(dt.value)==false){
		dt.focus()
		return false
	}
    return true
 }
*/











function checkFieldsInForm(theForm) {
   
   var borderstyle_veld = "1px #7F9DB9 solid";
   var borderstyle_vergetenveld = "3px #FF0000 solid";
   
   var alertText = "Sorry, uw formulier kon niet worden verzonden omdat \neen aantal verplichte velden niet of niet goed zijn ingevuld:\n\n";
   doSubmitform = true;
   check_radio_fieldname = "";
 	
 
 
 
   for(i=0; i<theForm.elements.length; i++){
       if(theForm.elements[i].name.match("_#v")){
      	  if(theForm.elements[i].type == "text" || theForm.elements[i].type == "textarea" || theForm.elements[i].type == "button" || theForm.elements[i].type == "file"){
		       
		  	   if(theForm.elements[i].value.length < 1){
   			   		stripedFieldName = theForm.elements[i].name.replace("_#v","");
					stripedFieldName = stripedFieldName.replace(/_/g," "); 
      	  			alertText += "Vergeten veld: " + stripedFieldName + "\n";
					theForm.elements[i].style.border=borderstyle_vergetenveld;
					doSubmitform = false;
			   }
			   else {
					theForm.elements[i].style.border=borderstyle_veld;

			   }
      	  }
		  else if(theForm.elements[i].type == "checkbox"){
		  	   if(!theForm.elements[i].checked){
   			   		stripedFieldName = theForm.elements[i].name.replace("_#v","");
					stripedFieldName = stripedFieldName.replace(/_/g," "); 
      	  			alertText += "Vergeten vinkje: " + stripedFieldName + "\n"
					theForm.elements[i].style.border=borderstyle_vergetenveld;
					doSubmitform = false;
			   }
			   else {
					theForm.elements[i].style.border=borderstyle_veld;
			   }
      	  }
      	  else if(theForm.elements[i].type == "select-one"){
		  	   if(theForm.elements[i].options[theForm.elements[i].selectedIndex].value.length < 1){
   			   		stripedFieldName = theForm.elements[i].name.replace("_#v","");
					stripedFieldName = stripedFieldName.replace(/_/g," "); 
      	  			alertText += "Vergeten keuze: " + stripedFieldName + "\n"
					theForm.elements[i].style.background="#ff0000";
					doSubmitform = false;
			   }
			   else {
					theForm.elements[i].style.background="#ffffff";
			   }
      	  }
      	  else if(theForm.elements[i].type == "radio" && check_radio_fieldname != theForm.elements[i].name){
		  	   check_radio_fieldname = theForm.elements[i].name;
			   control_radio_checked = false;
		  	   for(j=0; j<theForm.elements.length; j++){
			   	   if(theForm.elements[j].name == check_radio_fieldname) {
				   	  if(theForm.elements[j].checked){
					   	  control_radio_checked = true;
					  }
				   }
			   }
			   if (!control_radio_checked){
   			   		stripedFieldName = theForm.elements[i].name.replace("_#v","");
					stripedFieldName = stripedFieldName.replace(/_/g," "); 
      	  			alertText += "Vergeten keuze: " + stripedFieldName + "\n"
					//theForm.elements[i].style.border=borderstyle_vergetenveld;
					doSubmitform = false;
		  	   		for(j=0; j<theForm.elements.length; j++){
			   	   	  if(theForm.elements[j].name == check_radio_fieldname) {
					    theForm.elements[j].style.border=borderstyle_vergetenveld;
					  }
			   		}
			   }
			   else {
					//theForm.elements[i].style.border=borderstyle_veld;
		  	   		for(j=0; j<theForm.elements.length; j++){
			   	   	  if(theForm.elements[j].name == check_radio_fieldname) {
					    theForm.elements[j].style.border=borderstyle_veld;
					  }
			   		}
			   }
      	  }
	  }
	  if(theForm.elements[i].name.match("_#e")){
		  	   if(theForm.elements[i].value.length < 1){
   			   		stripedFieldName = theForm.elements[i].name.replace("_#e","");
					stripedFieldName = stripedFieldName.replace(/_/g," "); 
      	  			alertText += "Vergeten veld: " + stripedFieldName + "\n"
					theForm.elements[i].style.border=borderstyle_vergetenveld;
					doSubmitform = false;
			   }
			   else if(!isValidEmail(theForm.elements[i].value)){
   			   		stripedFieldName = theForm.elements[i].name.replace("_#e","");
					stripedFieldName = stripedFieldName.replace(/_/g," "); 
      	  			alertText += "Ongeldige email: " + stripedFieldName + "\n"
					theForm.elements[i].style.border=borderstyle_vergetenveld;
					doSubmitform = false;
			   }
			   else {
					theForm.elements[i].style.border=borderstyle_veld;
			   }
	  }
	  if(theForm.elements[i].name.match("_#b")){
			   
			   if(theForm.elements[i].value.length < 1){
   			   		stripedFieldName = theForm.elements[i].name.replace("_#b","");
					stripedFieldName = stripedFieldName.replace(/_/g," "); 
      	  			alertText += "Vergeten veld: " + stripedFieldName + "\n"
					theForm.elements[i].style.border=borderstyle_vergetenveld;
					doSubmitform = false;
			   }
			   else if(!elf_proef(theForm.elements[i].value)){
					doSubmitform = false;
   			   		stripedFieldName = theForm.elements[i].name.replace("_#b","");
					stripedFieldName = stripedFieldName.replace(/_/g," "); 
      	  			alertText += "Ongeldig nummer: " + stripedFieldName + "\n"
					theForm.elements[i].style.border=borderstyle_vergetenveld;
			   }
			   else {
					theForm.elements[i].style.border=borderstyle_veld;
			   }
	  }

	  if(theForm.elements[i].name.match("_#s")){
			   
			   if(theForm.elements[i].value.length < 1){
   			   		stripedFieldName = theForm.elements[i].name.replace("_#s","");
					stripedFieldName = stripedFieldName.replace(/_/g," "); 
      	  			alertText += "Vergeten veld: " + stripedFieldName + "\n"
					theForm.elements[i].style.border=borderstyle_vergetenveld;
					doSubmitform = false;
			   }
			   else if(!elf_proef_sofi(theForm.elements[i].value)){
					doSubmitform = false;
   			   		stripedFieldName = theForm.elements[i].name.replace("_#s","");
					stripedFieldName = stripedFieldName.replace(/_/g," "); 
      	  			alertText += "Ongeldig sofinummer: " + stripedFieldName + "\n"
					theForm.elements[i].style.border=borderstyle_vergetenveld;
			   }
			   else {
					theForm.elements[i].style.border=borderstyle_veld;
			   }
	  }
	if(theForm.elements[i].name.match("_#d")){
			   
			   if(theForm.elements[i].value.length < 1){
   			   		stripedFieldName = theForm.elements[i].name.replace("_#d","");
					stripedFieldName = stripedFieldName.replace(/_/g," "); 
      	  			alertText += "Vergeten veld: " + stripedFieldName + "\n"
					theForm.elements[i].style.border=borderstyle_vergetenveld;
					doSubmitform = false;
			   }
			   else if(!isDate(theForm.elements[i].value)){
					doSubmitform = false;
   			   		stripedFieldName = theForm.elements[i].name.replace("_#d","");
					stripedFieldName = stripedFieldName.replace(/_/g," "); 
      	  			alertText += "Ongeldig datum: " + stripedFieldName + "\n"
					theForm.elements[i].style.border=borderstyle_vergetenveld;
			   }
			   else {
					theForm.elements[i].style.border=borderstyle_veld;
			   }
	  }





   }
   if(doSubmitform) {
		return true;
   }
   else {
   		alert(alertText);
   		return false;
   }
}