// Copyright © 2001 by Apple Computer, Inc., All Rights Reserved.
//
// You may incorporate this Apple sample code into your own code
// without restriction. This Apple sample code has been provided "AS IS"
// and the responsibility for its operation is yours. You may redistribute
// this code, but you are not permitted to redistribute it as
// "Apple sample code" after having made changes.

// NAME

function checkName (strng) {
var error = "";
if (strng == "") {
	error = "Please enter your name.\n";
	}
return error;
}

// EMAIL

function checkEmail (strng) {
var error="";
if (strng == "") {
	error = "Please enter an email address.\n";
}

	var emailFilter=/^.+@.+\..{2,3}$/;
	if (!(emailFilter.test(strng))) { 
		error = "Please enter a valid email address.\n";
	}
	else {
//test email for illegal characters
		var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/
			if (strng.match(illegalChars)) {
			error = "The email address contains illegal characters.\n";
		}
	}
return error;	
}

// FORM-CHECK

function checkWholeForm(cheese) {
	var why = "";
	why += checkName(cheese.name.value);
	why += checkEmail(cheese.email.value);
	if (why != "") {
	   alert(why);
	   return false;
	}
return true;
}