horizontal scroll please help

[rkania]

ok so I have it scrolling left and right but the movie appears to the left of the mask and the scroll bar work a bit weird. here is my edited code:

// This example illustrates how to create a scroll bar with momentum
// There are two examples here one uses a movieclip within a mask
// and the second uses a text field. The code covers both.
// You my only want to use one or the other.



// Initialize some variables for this clip
box_mc.m = 0;
box_mc.l = track_mc._x;
box_mc.t = track_mc._y;
box_mc.r = track_mc._x + track_mc._width - box_mc._width;
box_mc.b = track_mc._y;
box_mc.xPos = box_mc._x;
box_mc.drag = false;
box_mc.range = track_mc._width - box_mc._width;


// These variables set the range for the scroll_mc
box_mc.scroll_r = mask_mc._x;
box_mc.scroll_l = mask_mc._x - ( scroll_mc._width + mask_mc._width );
box_mc.scroll_range = scroll_mc._width + mask_mc._width;



// Set up click and drag
box_mc.onPress = function() {
this.startDrag( false, this.l, this.t, this.r, this.b );
this.drag = true;
this.onMouseMove = function() {
this.bx = this.ax;
this.ax = this._x;
this.set_scroll_pos();
this.set_scroll_line();
};
};

box_mc.onRelease = box_mc.onReleaseOutside = function() {
this.stopDrag();
delete this.onMouseMove;
this.drag = false;
this.xPos = this._x;
this.m = this.ax - this.bx;
};


// Animates the clip
box_mc.onEnterFrame = function() {
if ( this.drag == false ) {
this.m = this.m * .8;
this.xPos += this.m;
if ( this.xPos < this.l ) {
this.xPos = this.l; // Stop at top
this.m = -this.m; // Reverse motion
}

if ( this.xPos > this.r ) {
this.xPos = this.r;
this.m = -this.m; // this.m = this.m * -1;
}

this._x = this.xPos;

// Set the position of scroll_mc
this.set_scroll_pos();
this.set_scroll_line();
}
};