FMX please help with random movement height/width

programming flash
1

hello. still new at this. i posted a similar question, but i think it was in the wrong forum, and i apologize if this is somehow repetative.

anyway, is it possible to specify the range of the random movement? (referring to the suprabeener random movement script). not talking about just changing the width and height of the entire movie; is there a way to limit the movement to just part of the movie?

i’d like the randomly moving particles to stay in the center of the movie. for example, if i have a 300 pixel high movie, is it possible to specify that the random motion only takes place in the middle 100 pixels? if i change the height of the movie to 100, then the motion only takes place in the upper third.

any links/suggestions/examples would be greatly appreciated!
thank you much

2

ummm… what about:
//if the movie width is 300 pixels wide
particle.onEnterFrame = function () {
this._x = Math.random () *300;
this._x += 5;
}