ActionScript 3.0 :: Dynamic Button Hover Tooltips / Descriptions And Linking?

I am busy converting my online digital portfolio from AS2 to AS3. I have made a new .fla and placed within it only the elements that relate to my question, to greatly simplify things so it is easy to see what I want to do.Lets say I have 3 movieclip buttons, which do three things when hovered over :

1. play a shine animation

2. move slightly

3. cause a tooltip description to appear / fade in, somewhere else on screen.

When mouse moves off, the above 3 things revert to normal and the description fades out.These buttons serve to show a description of the relevant project in my projects folder (project1.html, peoject2.html and project3.html, for demonstration purposes), and to link to them when clicked. The point is that I am trying to do this dynamically, so I have one movieclip(called descriptions) that contains all the descriptions each on its own frame, and use something like

//pseudocode
when button 1 is hovered over, descriptions.goToAndStop(1);

It is difficult for me to explain - but if you just run my swf and also take a quick look at my code (its not a lot) you will know exactly what I am trying to do.

In summary: Basically if you run my swf, you will see 3 buttons. When you hover over each, they are all saying Description 1, but I want button 1 to show description 1 and button 2 to show description 2 etc.Key items / code to look at inside the .fla are :

1. the first frame on the main timeline, actionscript layer - the code

2. the descriptionsHolder movieclip on the descriptions layer

3. the projectDescriptions movieclip inside the descriptionsHolder movieclip

4. the dynamic button (double click any of the buttons) - this is the idea I want for the descriptions too, its a reusable button that has the label 'button1' on all 3 buttons but with some code - the labels change at runtime to button1, button2 and button3.

5. the code inside the dynamic button movieclip on frame 1, actionscript layer.

6. note the buttonLabel movieclip inside the button movieclip, same thing I want done for the descriptions.

6. Also to please note, my code for linking each button to a project (not working)- that I also want to be a reusable function, for assigning a variable to contain the link for the dynamic button, depending on which instance of it is clicked -> go to either project1.html, project2,html or project3.html. I am trying to 'think like a programmer' and use modular, dynamic stuff, but it seems I am having trouble assigning variables or individual frames at runtime to multiple instances of the same dynamic movieclip.