function contactData() {
	var problem = 'No';
	if (document.contact.realname.value.length <= 0 || document.contact.realname.value == "enter your name") {
		alert ("Please enter your name.");
		document.contact.realname.focus();
		problem = 'Yes';
		return false;
	}
	if (document.contact.email.value.length <= 7 || document.contact.email.value == "enter your contact email") {
		alert ("Please enter your email address.");
		document.contact.email.focus();
		problem = 'Yes';
		return false;
	}
	if (document.contact.telephone.value.length <= 6 || document.contact.telephone.value == "your phone no.") {
		alert ("Please enter your telephone number.");
		document.contact.telephone.focus();
		problem = 'Yes';
		return false;
	}
	if (document.contact.message.value.length <= 6 || document.contact.message.value == "Enter the details of your enquiry") {
		alert ("Please enter the details of your enquiry.");
		document.contact.message.focus();
		problem = 'Yes';
		return false;
	}
	if (problem == 'No') {
		return true;
	} else {
		return false;
	}
}