如何从黑莓中的一个选项卡（窗格管理器模型）导航到另一个选项卡？

I have created 3 tabs in my blackberry application.The first tab allows the user to select a particular date range and search for entries.The search button is on first tab.The results are fetched from a sqlite database and displayed on grid view of third tab. This is the main code i have used for creating tabs:I have created 3 tabs in my blackberry applicat