如何使用jQuery在点击某个特定链接时打开引导导航选项卡的特定选项卡?

I am new to jquery and bootstrap,so please consider my mistakes.I have created a bootstrap modal for login and registration. It contains two nav-tabs called as login and registration.I have two buttons that popup the same Modal window, but display a different tab inside the Modal window. In each tab is a form with a number of inputs. My issue is getting the modal popped up with login tab opened in the modal when i click on the 'login' button and registration tab opened when i click on the 'register' button on my page.I am new to jquery and bootstrap,so please cons