function VF_formulier(){ 

//v2.0
<!--start_of_saved_settings-->
<!--type,text,name,txtemail,required,true,isEmail,errMsg,Uw e-mail adres ontbreekt of deze is onjuist-->
<!--type,text,name,txttelefoon,required,true,errMsg,Uw telefoonnummer ontbreekt-->
<!--type,text,name,txtplaats,required,true,errMsg,Uw plaatsnaam ontbreekt-->
<!--type,text,name,txtpostcode,required,true,errMsg,Uw postcode ontbreekt-->
<!--type,text,name,txtadres,required,true,errMsg,Uw adres ontbreekt-->
<!--type,text,name,txtcontact,required,true,errMsg,Uw naam ontbreekt-->
<!--end_of_saved_settings-->
	var theForm = document.formulier;
	var emailRE = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;
	var errMsg = "";
	var setfocus = "";

	if (!emailRE.test(theForm['txtemail'].value)){
		errMsg = "Uw e\-mail adres ontbreekt of deze is onjuist";
		setfocus = "['txtemail']";
	}
	if (theForm['txttelefoon'].value == ""){
		errMsg = "Uw telefoonnummer ontbreekt";
		setfocus = "['txttelefoon']";
	}
	if (theForm['txtplaats'].value == ""){
		errMsg = "Uw plaatsnaam ontbreekt";
		setfocus = "['txtplaats']";
	}
	if (theForm['txtpostcode'].value == ""){
		errMsg = "Uw postcode ontbreekt";
		setfocus = "['txtpostcode']";
	}
	if (theForm['txtadres'].value == ""){
		errMsg = "Uw adres ontbreekt";
		setfocus = "['txtadres']";
	}
	if (theForm['txtcontact'].value == ""){
		errMsg = "Uw naam ontbreekt";
		setfocus = "['txtcontact']";
	}
	if (errMsg != ""){
		alert(errMsg);
		eval("theForm" + setfocus + ".focus()");
	}
	else theForm.submit();
}
//-->