Turning layers on and off with buttons....
Now please understand I am by no means a coding expert. This is just what I used after combing the forums and failing miserably many times. There may be a better way of doing what you need, however this is how I got it to work. I use an "If, else if" statement. I can't open your file, so I will just try to explain how the code I am pasting here should work.
I have this code on a drop down list for state specific information. It makes certain subforms on my front page show when the appropriate state is selected. Within those subforms are radio buttons as well as buttons for hiding/showing pages and linking to those pages.
I put the following code on the exit event of the drop down as well as the initialize (because the options need to stay visible on reopen of the form) Your document may not need to be this complex, I am just trying to give you information I wish someone had given me when I was green!! 
Please note that I have the values of the dropdown in state abbreviation form "AL", "AK" etc. I think the default is to have it numerically, but I changed it so the code was a little less difficult to read. (FYI: if you use this kind of idea for your document and add selections to your drop down in the future, remember to check the "Object > Binding" tab for the values. If you add information at a later date it gives the new info the next sequential number as a value which will throw your code off.) Here is how the code should look, and note that this dropdown will have 50 sections since it is for a state drop down box, but I only listed a few so you get the general idea.
if(headlineState.rawValue == "AL"){
forms.UMUIM.presence ="visible";
}
else if(headlineState.rawValue == "AK"){
forms.UMUIM.presence="visible";
forms.PIP.presence="visible";
} ......and so on till all values are included
else{
forms.UMUIM.presence="hidden";
forms.PIP.presence="hidden";
}
The
"headlineState" is my drop down
"forms" is a subform
-"UMUIM" and "PIP" are subforms within the "forms" subform.
I know this is probably confusing, I know I had no clue what I was doing at first either, but you just have to kind of dive in and through trial and error figure JavaScripting out. I hope this helped some. Let me know if this is uber confusing or if after you try it with your document it still isn't working and I can try to help a bit more!
