function valid_guest()
{
	if(document.guestForm.name.value == "")
	{
		alert("Please enter a name");
		return false;
	}
	else if(document.guestForm.location.value == "")
	{
		alert("Please enter a location");
		return false;
	}
	else if(document.guestForm.comment.value == "")
	{
		alert("Please enter a comment");
		return false;
	}
	else if(document.guestForm.security_input.value == "")
	{
		alert("Please enter the security word");
		return false;
	}

	return true;
}