implement this feature in jsp and deploy in tomcat

Hi
I was extreamly amazed when I saw the activewidgets website.
Basicaly I have to implement the same kind of logic in my jsp page.
The requirement is that when I get the page with table have 5 coloumns, by default is should be sorted in ascending orded with respect to the first coloumn and after as usual sorting when the user clicks on any coloumn. What i am doing here is, I am getting the dynamic DOC and I pass to XSL, put some XPath, get the required table data and display the table using XSL.I am using Struts, and my application is deployed in Tomcat 5.5.9.
Please help me and a sample code will be appriciated.
Thanks in advance..