Professional :: Incorrect Navigation From Homepage?

I am using AS3.0.I have created simple forward naviagtion from my homepage to my second screen using the code below and a simple button (click1)

//handle events for buttons...
click1.addEventListener(MouseEvent.CLICK, clickSection1);
function clickSection1(evtObj:MouseEvent){[code].......

Slightly modified code is used on consequent pages to navigate forward through my site.I have also created a home button that navigates me back to my first screen (called screen2) using the following code...

home_btn.addEventListener(MouseEvent.CLICK, clickhome1);
function clickhome1(e:MouseEvent):void
{gotoAndStop("screen2")
}

However, when I return to the homepage and click forward, instead of taking me to the next page and the next page, it jumps me forward directly to the 5th. screen.