[zodehala]

how can i refresh a part of a page (see image in attachment )

[Nico]

That depends on what you want to do.
If it's an image you want to refresh or change, you can use JavaScript alone. If you want to change a text by clicking on a button you can do that with JavaScript too, unless you want to pull the text from a database or the server in general. Then you'll need AJAX.

Explain a bit better what you're trying to do, and I can give more specific help.

[semodders]

you can add an frame and put an java code to refresh that frame.

[TwoD]

Not "java", "JavaScript"

What semodders' referring to is usually known as the hidden (i)frame method. It's an old way of simulating asynchronous requests by requesting a page from the server into the hidden frame and then read that data from the main frame when it's done loadig. Sometimes, a small script is included in every requested page which simply calls a function on the main page to notify it that loading is complete.

This approach is usually used as a fallback if the xmlHttpRequest object (used by modern AJAX implementations) isn't available.

Allthough I doubt you need AJAX at all if you only want to change an image (and update cookies) since you only need to change the src property of the image to trigger a new request.