Adding a border to an image

[rodjsr]

I have thumbnails of pictures (which are buttons inside a movie clip) and I want them to have a white border on:
1) RollOver
2) When buttons the main timeline that correspond to each thumb (i.e., interact_btn, watch_btn, read_btn, listen_btn & watch_btn) are pressed

Here's what it looks like so far.

Here's an example of my code for each thumbnail (i.e., img1_btn):

img1_btn.onRollOver = function(){
this._alpha = 100;
_parent.read_btn._alpha = 100;
_parent.listen_btn._alpha = 100;
_parent.watch_btn._alpha = 100;
_parent.see_btn._alpha = 100;
_parent.interact_btn._alpha = 100;
}
img1_btn.onRollOut = function(){
if(allowRollOut == true){
this._alpha = 40;
_parent.read_btn._alpha = 40;
_parent.listen_btn._alpha = 40;
_parent.watch_btn._alpha = 40;
_parent.see_btn._alpha = 40;
_parent.interact_btn._alpha = 40;
} else {
this._alpha = 100;
_parent.read_btn._alpha = 100;
_parent.listen_btn._alpha = 100;
_parent.watch_btn._alpha = 100;
_parent.see_btn._alpha = 100;
_parent.interact_btn._alpha = 100;
}
}

I've seen in other pages people have used the _border property, but I'm not sure how to use it.
I tried adding it as I did the _alpha but that didn't work.
Any hints?

Thanks.

[kglad · Accepted solution]

add a white rectangel behind your images in your thumbnail movieclips. make the rectangle a little larger than your images and position the rectangle so it looks like a border. convert it to a movieclip and give it an instance name. by assigning the white rectangle's _visible property to false and true you can make it appear the border is disappearing and reappearing.

[rodjsr]

That's easy. Thanks!

[kglad]

you're welcome.