function download_wp_submit() {
	var status = true;
	var message = '';
	var focus = '';
	
	/* === Name === */
	if(!document.download_wp.LastName.value) {
		document.getElementById('lastname_div').className += ' error';
		
		message += '- Achternaam\n';
		
		if(!focus)
			focus = document.download_wp.LastName;
		
		status = false;
	}
	
	else
		document.getElementById('lastname_div').className = document.getElementById('lastname_div').className.replace(/error/g, '');
	
	/* === Email === */
	if(!document.download_wp.Email.value) {
		document.getElementById('email_div').className += ' error';
		
		message += '- E-mail\n';
		
		if(!focus)
			focus = document.download_wp.Email;
		
		status = false;
	}
	
	else
		document.getElementById('email_div').className = document.getElementById('email_div').className.replace(/error/g, '');
	
	/* === Company === */
	if(!document.download_wp.Company.value) {
		document.getElementById('company_div').className += ' error';
		
		message += '- Bedrijfsnaam\n';
		
		if(!focus)
			focus = document.download_wp.Company;
		
		status = false;
	}
	
	else
		document.getElementById('company_div').className = document.getElementById('company_div').className.replace(/error/g, '');
	
	if(message)
		alert('De volgende velden zijn nog niet goed of onvolledig ingevuld:\n\n' + message);
	
	if(focus)
		focus.focus();
	
	if(status)
		document.download_wp.submit();
}