Combined Search button The Combined Search button is a great way to conserve real estate on your Toolbar while still retaining access to all the different ways there are to search using Google. Simply enter search terms in the search box and click on the main part of the button to search, or click the little triangle on the right-hand end of the button to bring down a menu of different search types.
And my fav.
Navigation The Next and Previous result buttons allow you to quickly navigate among the results from the last Google search you performed. For example, you might perform a search and click the first result link and surf around for a while, then click the "Next" button to see the second result.