How do I make my Timeline play forward or reverse depending on its current location?

I'm attempting to make a side scrolling site. I have a wide div set up in the main timeline that animates 1000px at a time on the x-coordinate between the labels I have set for each "page".
I would like to click a button and go to the associated label and stop. I am faced with 2 problems:
1. Sometimes this would require the playhead to move in reverse rather than forward.
2. I originally had stop triggers on the timeline under the labels but if I am able to get my first problem fixed these triggers would stop the animatin before reaching the label.
I'm just learning java so I'm guessing I need an if statement and a function.
Example of what I'm trying to figure out:
I want to press work button and play to label "work".
If I'm at label "home" I need to play(); and stop at label "work". If I were at label "blog" I would need to playReverse(); to label "work".
Please help! I've been going looney trying to figure it out!

Thank you for your reply!
My post may have been a little misleading...
I have a navigation bar with 5 items. Home, work, blog, about, contact. My main timeline has a symbol that is 6000px wide. Inside that symbol are individual symbols that make each of these "pages" which are 1000px each. My timeline has animations that last 1.5 secs each and animate the main symbol 1000px on the x dimension to stop on the main stage which is 1000px. Essentially it creates a 5 "page" side scrolling layout. I have the five labels on the timeline starting at 0s with "home", 1.5s labeled "work", 3s labeled "blog"... etc.
I wish to be able to click blog and travel forward or reverse on the timeline and then stop on "blog". Then If you click home you should reverse along the timeline and stop on "home". If I have any stop(); triggers on the timeline it would stop in transition to my target label without reaching it. In addition a generic play(); or playReverse(); doesnt target a specific label which is whats required for my navigation bar.
I need to play forward or reverse from the current location on the timeline and stop when it reaches a specific label. Visually you would be sliding back and forth across the pages as you use the navigation.
Is there a way to do this with variables?
I'm going to try triggers on the timeline like this sym.setVariable("pageValue", "home"); when on the "home" label. sym.setVariable("pageValue", "work"); when on the "work" label.
but then how would I tie that to my buttons?
If I click work and I'm on home I need it to check: var myVariable = sym.getVariable("pageValue"); and then an if or else statement I think? I'm such a noob. I'm trying really hard to grasp it
something like: if pageValue = "home" { sym.play();} else if pageValue = "blog","about","contact" {sym.playReverse} if pageValue = "work" {sym.stop();};
I know there is probably all kinds of syntax errors there but can someone understand what I'm getting at?
to make this even more tricky I am interacting with the stage with an html and css navigation bar that lays over the stage so I need this to be in function style (see code)
function goHome()
javascript:var targetComp = AdobeEdge.getComposition('EDGE-57204389');
 targetComp.getStage().playReverse();
and then call it like this in html
<li><a href="javascript:goHome();" class="three-d">
 Dynamic
 DynamicArtisans
 </a></li>
This works to play the stage in reverse but its not the functionality I need. Any help would be greatly appreciated and a great learning point for me and hopefully others in my situation!

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