Single Portlet Refresh in a Portal Page

[suresh myageri]

Hi,

I have added four portlets in a Sinlge Portal page. say p1 ,p2 ,p3 and p4.

I am using the cooperative portlets. p1 is the source and p2 is the target.

when i click on any action button in p1 complete portal page is getting reloaded.Is there any way only p2 get refresh and other portlets p3 and p4 remain in their own state.
The values which i entered in p3 and p4 are lost because of the action button click of p1 portlet.

is any one having idea ,pls help.

Regards
Suresh