function validateForm(contact)
{



if(document.forms.Contactform.realname.value=="")
{
alert("Vul uw naam in");
document.forms.Contactform.realname.focus();
return false;
}

if(document.forms.Contactform.email.value=="")
{
alert("Vul uw emailadres in");
document.forms.Contactform.email.focus();
return false;
}

if(document.forms.Contactform.telefoon.value=="")
{
alert("Vul uw telefoonnummer in");
document.forms.Contactform.telefoon.focus();
return false;
}

}