function validForm(contactForm) {
	
	if (contactForm.email.value == "") {
	alert("Please enter your email")
	contactForm.email.focus()
	return false
	}
	// test if valid email address, must have @ and .
		var checkEmail = "@.";
		var checkStr = contactForm.email.value;
		var EmailValid = false;
		var EmailAt = false;
		var EmailPeriod = false;
		for (i = 0;  i < checkStr.length;  i++)
		{
		ch = checkStr.charAt(i);
		for (j = 0;  j < checkEmail.length;  j++)
		{
		if (ch == checkEmail.charAt(j) && ch == "@")
		EmailAt = true;
		if (ch == checkEmail.charAt(j) && ch == ".")
		EmailPeriod = true;
			  if (EmailAt && EmailPeriod)
				break;
			  if (j == checkEmail.length)
				break;
			}
	// if both the @ and . were in the string
		if (EmailAt && EmailPeriod)
		{
				EmailValid = true
				break;
			}
		}
		if (!EmailValid)
		{
		alert("You have entered an invalid email. Please try again");
		contactForm.email.focus();
		return (false);
		}
	
	
	return true
	}