When i run this $btns.first().click(); in the first function it doesnt action it where as if i click it (as per second function it works perfectly. The result is the slides all show when i click on a tab instead of just one. And then when i click one of the inner buttons the slides all disapear leaving just one. Which is correct.
I know this is hard to understand so hopefully the link helps.
When you define the $tabs.click() function, $btns doesn't actually exist, so it's probably trying to click an undefined reference. Just put the $tabs.click() function declaration below the instantiation of $btns.
Also, when you click on a $tabs it doesn't update the screen correctly. The return call in a function means that it leaves the function at that point. It will NOT continue through and run any other lines of code that exist after it. So, in your $tabs.click() declaration, you should move the last line ($btns.first().click()) above your return false; statement.
Finally, you might want to move the $tabs.first().click() and $btns.first().click() lines, as they rely on the events being declared, and might not give you the results you want if they exist before the event declaration.