Hi,
I have a website with a secure payment page (https://www.blablabla .com/pay.php) now when you go to this page and then click on the navigation menu to any of the regular pages from the site (http://) they show up as secure pages(https://) I know that google probably wont find them but do you think there might be a chance that googlebot might find them and index them the there will be duplicate content. If so is there any way to prevent this say by placing a no index on that page.

thanks,
htdawg