// JavaScript Document

function checkformulier(){
if (document.contactform.naam.value == "" || document.contactform.email.value == "" || document.contactform.plaats.value == "" || document.contactform.postcode.value == "" || document.contactform.tel.value == "" || document.contactform.fax.value == "" || document.contactform.bedrijfsnaam.value == "")
{
alert("Controleer uw gegevens");
return (false);
}
window.open ('bedankt.html', 'BannerDiscount.nl-Bedankt','height=225, width=280,left=300,top=200,toolbar=no, menubar=no, scrollbars=no, resizable=no');
}