I can't get this to work, but i know you can.

Question

I'm trying to modify this image pan tutorial a bit...but it
isn't working.
http://www.kirupa.com/developer/flash8/interactive_image_pan.htm
there are two things that I need to change. The way it
currently is...the function is operating on any mousemove. So in
other words, whenever you move around the mouse, the strip moves
left and right.
I want to have it so that it is constrained to when you are
rolling over a certain MC of thumbnails.
The other issue, which is related is that the code is using
the width of the stage to calculate the move, but because my strip
of thumbnails is an MC that is less than the width of the
stage,.....how can I modify the code to base it's absolute left and
right settings on the thumbnail MC instead of the whole stage.
If you can help me with this, I will be happy.
this.onMouseMove = function() {
constrainedMove(bg_mc, 4, 1);
function constrainedMove(target:MovieClip, speed:Number,
dir:Number) {
var mousePercent:Number = _xmouse/Stage.width;
var mSpeed:Number;
if (dir == 1) {
mSpeed = 1-mousePercent;
} else {
mSpeed = mousePercent;
target.destX =
Math.round(-((target._width-Stage.width)*mSpeed));
target.onEnterFrame = function() {
if (target._x == target.destX) {
delete target.onEnterFrame;
} else {
target._x += Math.ceil((target.destX-target._x)*(speed/100));
}

Answer 1

can you not just say:
whateverInstanceName_mc.onRollOver = function(){
instead of:
this.onMouseMove = function() {
and use:
whateverInstanceName_mc._width
instead of:
stage.width