Remote scripting...

Hi, first of all I'm a BIG devote of PHP and have no idea of programming in ASP, but here is the cuestion: The other day a friend of mine that works with ASP's showed me an interesting feature of ASP's and IIS, something called Remote Scripting. With this, my friend was able to change the content of a part of a page without needing to reload the page. For example he could push a form button and make some radio buttons appear on the same page where the button was without the browser having to reload the page. I only know it is made with javascript from the client side and some special characteristic from IIS or ASP. Is this possible to do with php? thanks,