function whatsthis() {
 	window.alert('Verification Code\n\nThe verification code is needed to protect against spam and spam robots.\n\nRobots crawl the web looking for web forms just like this one, they then submit the form multiple times automatically.\n\nThis can be hundreds of times a minute!, sending out spam to people from made up addresses like you@yourdomain.co.uk - this is not good for any of us, so we have implemented this protection.\n');	
 	 }