function mailingFocus() {
	var email=document.getElementById('email');
	if(email.value=='Uw e-mail adres') email.value='';
}

function mailingBlur() {
	var email=document.getElementById('email');
	if(email.value=='') email.value='Uw e-mail adres';
}

function mailingSubmit() {
	var email=document.getElementById('email');
	return (email.value=='Uw e-mail adres' || email.value=='' || email.value.indexOf('@')<1 || email.value.indexOf('@')>email.value.lastIndexOf('.')) ? false : true ;
}