jQuery Grid Plugin - jqGrid

Hi Experts…

In a lot of my grids, I make use of the topics being published when the grid is complete or after its complete etc.

As I move from page to page different girds load up. I am seing instances whereby, even if a grid is not suppose to publish a topic, it actually does(as that topic was published in a previous jsp page).

I had presumed that when a new jsp is loading, all previous topics had been cleared/cacelled/deleted. I think this is not the case.

My question: is there something I can do, so that when I leave a jsp… all previous topics published are cancelled? This will solve my problem as when a new jsp loads, it will then only publish and listen to its own topics.

1 final question: All these different topics that my grids are publishing.. is there any overheard on performance?

thanks for your help