function validate(form){
	
	var i, bolErr = false, strErr = ""
	var email = form.email
				
	for (i=0; i < 7; i++){
		if (i != 0 && i!= 2 && i!= 3 && i!= 4){ //user does not have to enter RT passengers or phone number.
			if (form.elements[i].value == ""){
				bolErr = true;
				strErr = strErr + "\n" + form.elements[i].id;
			}
		}
	}
			
	if (bolErr){
		window.alert("The following fields must be completed before\n this form can be submitted:\n" + strErr);
		return false;
	}
	
	
	else if ((email.value == null)||(email.value == "")){
		alert("Please enter your email address.");
		email.focus();
		return false;
	}
				
	else if (emailValidate(email.value) == false){
		email.focus();
		email.select();
		return false;
	}

	return true;
	
}