function checkform(){
 
    
	if (document.enquiry.name.value=='') {
        rc=alert('Your Name is required.');
        return false;
    }
    if (document.enquiry.postcode.value=='') {
        rc=alert('Your Post Code is required.');
        return false;
    }
    if (document.enquiry.email.value.indexOf('@')==-1) {
        rc=alert('Your E-mail Address is required.');
        return false;
    }
   if (document.enquiry.message.value=='') {
        rc=alert('Please include your enquiry or message.');
        return false;
    }
    
    return true;
}