Sidebar Posts different message on each page

Hello

I currently developing a website for a charity that deals with anti-bully and due to the sensitive nature, i have to have the site in maintenance mode, so sorry i’m not going to be able to show any examples.

The site is based on the Coraline theme with three column, now here is the problem. there are twenty static pages and in one of the sidebars ‘Secondary’ (text widget at the moment- sample text) so it appears on all pages, However what i need to do is have a different message in the secondary side bar for each page, hopefully there is a simple and elegant solution.

What i would like to do is have it so we have twenty categories i.e Cat, Dog, Rabbit so if someone posted to the Dog Category it would appear in only that page’s sidebar of the Dog page.

But a mentioned there maybe a better way to do this.

Regards

Nigel