function tellAFriendFormCheckit(f) {
	if (f.yourname.value.length<1) {alert("Please enter your name");f.yourname.focus();return false;}
	var email = f.youremail.value;
	var emailOK = true;
	var message = "";
	if (email.length<1) {
		message="Please enter your email address";
		emailOK=false;
	} else {
		message="Your email address seems to be invalid. Please check it.";
		if (email.indexOf('@')==-1) emailOK=false;
		if (email.indexOf('.')==-1) emailOK=false;
		if (email.length<6) emailOK=false;
	}
	if (!emailOK) {alert(message);f.youremail.focus();return false;}

	if (f.friendsname.value.length<1) {alert("Please enter your friend's name");f.friendsname.focus();return false;}
	var email = f.friendsemail.value;
	var emailOK = true;
	var message = "";
	if (email.length<1) {
		message="Please enter your friend's email address";
		emailOK=false;
	} else {
		message="Your friend's email address seems to be invalid. Please check it.";
		if (email.indexOf('@')==-1) emailOK=false;
		if (email.indexOf('.')==-1) emailOK=false;
		if (email.length<6) emailOK=false;
	}
	if (!emailOK) {alert(message);f.friendsemail.focus();return false;}

	return true;
}