The component is fully made in ActionScript 2.0 and the code can be found in the first frame of the .FLA file.
Variables that you can change:

galeryWidth set the width of the gallery;

galeryHeight set the gallery height;

menuHeight set the height for the up and bottom menu;

menuSpace spacing between the up menu and first pictures of the gallery;

menuSpacing spacing between menu butons;

colors set the colors for the buttons gradient when it is inactive;

colorsOver set the colors for the buttons gradient when it is active;

pictureWidth the width for the preview picture;

pictureHeight the height for the preview picture;

pictureBorder the size of the border for the preview picture;

pictureTitle the size of the title for the preview picture;

pictureSpacing the minimum spacing between the picture ... it will be resize for the best position of the pictures;

pictureAlpha alpha for the picture preview when is inactive;

pictureBorderColor the color for the border of the preview picture when mouse is not on it;

pictureBorderColorOver the color for the border of the preview picture when mouse is on over it;

active the active category for the beginning is it is undefined then there will be nothing when you load the file;

menuTextFormat set the text format for the text in the menu;

titleFormat set the text format for the text in the title of the picture when mouse is not over it;

titleOverFormat set the text format for the text in the title of the picture when mouse is over it;

infoTextFormat set the text format for the information text on the picture when it is on ViewMode;

The code is well commented so you are not going to have problems understanding it and you have a specification word document with all you have to know. Enjoy!

I offer full support for this component.