function call by getting the name of function from URL

[eluser]alberta[/eluser]
actually what em doing is, there is search form on each page of my website.
when i click on search button it redirects me to index function of my controller, and from where after getting the result i want to show the result on previous page where i was before and show the result on same page.

that's why i get the name of function from uri and ll call the same function and then pass same data plus additional search result.

In fact if any one has some better idea to implement it, then do tell me.

Thanks