Need to update content on web page in real time...

Hi all,
I am using jsp with struts to display some information in a web page.
Let's imagine i am displaying a list of stocks and its price in a web page. I want to upload the price of the stock as they are changing. I like to do it in a smart way: it is... i don't like to refresh the whole page every x seconds, i just like to change the value of the field that changed in the server in real time.
Which are your suggestions? My coworked told me to hava a look in Ajax... What do you think about it?
Thanks,
Dani.

Well first thing which i wanna emphasise on AJAX is not the replacement of this it still uses similar logic refreshing of X secs.
Rather instead of refreshing the whole page one would only refresh a view.
If you are using looking at a solution to achieve via struts here is where you should go in read it and look for a solution.
http://today.java.net/pub/a/today/2005/10/27/sprinkle-ajax-magic-into-struts-webapp.html
http://wiki.apache.org/struts/AjaxStruts
http://www.omnytex.com/articles/xhrstruts/
Hope this might help :)
REGARDS,
RaHuL

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