Non-Codeigniter question - form processing like PayPal's login

[eluser]taro uma[/eluser]
Hi,I was wondering if anyone knew how form processing like Paypal's login works, where there is a "Loging In...." message, then you are forwarded to your account when that is done. I don't know the term used for this, so I am having no luck finding anything about it on google. I've seen similar things in some shopping carts when checking out, like "Processing your order..." and then a little animation below it.

[eluser]TheFuzzy0ne[/eluser]
PayPal with [url="https://www.paypal.com/ipn"]IPN[/url]?

Have you seen the [url="http://codeigniter.com/wiki/PayPal_Lib/"]Paypal library[/url]?

[eluser]The Wizard[/eluser]
hello
create a view wich has a URL HTML refresh in it with a variable for the url.

set the url in the controller, you may set the refresh time to 3-4 seconds
and there you go.