function checkFields(sender) {
	if (sender.name.value == "")
	{
		alert("Please enter your name.");
		sender.name.focus();
		return false;	
	}
	if ((sender.email.value == "") || (sender.email.value.indexOf('@') == -1) || (sender.email.value.indexOf('.') == -1))
	{
		alert("Please enter a valid email address.");
		sender.email.focus();
		sender.email.select();
		return false;	
	}
	if (sender.phone.value == "")
	{
		alert("Please enter your phone number.");
		sender.phone.focus();
		return false;	
	}
}