Scrollbar et Flash

Salut à tous, voilà j'ai réussi à mettre une scrollbar dans un site tout en flash mais le truc, c'est que je voudrais que la vitesse de défilment soit plus rapide...

Je vous laisse le code :
#initclip
_global.FUISmoothScrollbar = function() {
this.init();
};
FUISmoothScrollbar.prototype = new MovieClip();
Object.registerClass("FUISmoothScrollbar", FUISmoothScrollbar);
FUISmoothScrollbar.prototype.init = function() {
var c = this._parent[this._targetInstanceName];
this.w = Math.round(c._width);
this.h = Math.max(34, Math.round(this._height));
this._xscale = this._yscale=100;
c._y = this._y=Math.round(this._y);
this.x = this._x = Math.round(c._width+c._x);
c._x = Math.ceil(this._x-c._width);
this._height = Math.round(this._height);
var scrollH = (this.h-34)*((this.h-34)/c._height);
var s = this.attachMovie("scroll_asset", "scroll_bar", 1);
this.h<45 ? s.bar._visible=0 : s.bar._visible=1;
s.scrolltrack.useHandCursor = s.bas.useHandCursor=s.haut.useHandCursor=s.bar.useHandCursor=false;
s.scrolltrack._height = this.h-34;
s.bar.centre._height = scrollH-10;
s.bar.bas._y = s.bar.centre._y+s.bar.centre._height;
s.bar.basPos = s.bar.centre._y+s.bar.centre._height;
s.bar.bas._y = s.bar.basPos;
s.bas._y = this.h-17;
var m = this.createEmptyMovieClip("mask", 2);
m.lineStyle(0);
m.moveTo(0, 0);
m.beginFill(0x000000, 0);
m.lineTo(-this.w, 0);
m.lineTo(-this.w, this.h);
m.lineTo(0, this.h);
m.endFill();
c.setMask(m);
this.loadScroll();
};
FUISmoothScrollbar.prototype.loadScroll = function() {
var c = this._parent[this._targetInstanceName];
var m = this.mask;
var s = this.scroll_bar;
var factor = 0;
if (c._height<=m._height) {
s.bar._visible = 0;
} else {
var scrollMaxi = c._height-m._height;
s.bar.onPress = function() {
this.yDragPoint = this._y-_root._ymouse;
this.onEnterFrame = function() {
this.coorY = _root._ymouse+this.yDragPoint;
this._y += (this.coorY-this._y)/3;
if (this._y>(s.scrolltrack._y+s.scrolltrack._height)-s.bar._height) {
this._y = (s.scrolltrack._y+s.scrolltrack._height)-s.bar._height;
}
if (this._y<17) {
this._y = 17;
}
};
this._parent._parent.scroll();
};
s.bar.onRelease = s.bar.onReleaseOutside=function () {
this.onEnterFrame = function() {
this._y += (this.coorY-this._y)/3;
if (this._y>(s.scrolltrack._y+s.scrolltrack._height)-s.bar._height) {
this._y = (s.scrolltrack._y+s.scrolltrack._height)-s.bar._height;
delete this.onEnterFrame;
this._parent._parent.stopScroll();
}
if (this._y<17) {
this._y = 17;
delete this.onEnterFrame;
this._parent._parent.stopScroll();
}
if (Math.abs(this._y-this.coorY)<1.2) {
delete this.onEnterFrame;
this._parent._parent.stopScroll();
}
};
};
s.bas.onPress = function() {
this.onEnterFrame = function() {
factor += ((this._parent._parent.h/30)-factor)/3;
s.bar._y = Math.min(s.bar._y+factor, (s.scrolltrack._y+s.scrolltrack._height)-s.bar._height);
this._parent._parent.scroll();
};
};
s.bas.onRelease = s.bas.onReleaseOutside=function () {
this.onEnterFrame = function() {
factor += (0-factor)/3;
s.bar._y = Math.min(s.bar._y+factor, (s.scrolltrack._y+s.scrolltrack._height)-s.bar._height);
this._parent._parent.scroll();
if (Math.abs(factor)<1) {
factor = 0;
s.bar._y = Math.min(s.bar._y+factor, (s.scrolltrack._y+s.scrolltrack._height)-s.bar._height);
delete this.onEnterFrame;
this._parent._parent.stopScroll();
}
};
};
s.haut.onPress = function() {
this.onEnterFrame = function() {
factor += ((this._parent._parent.h/30)-factor)/3;
s.bar._y = Math.max(s.bar._y-factor, 17);
this._parent._parent.scroll();
};
};
s.haut.onRelease = s.haut.onReleaseOutside=function () {
this.onEnterFrame = function() {
factor += (0-factor)/3;
s.bar._y = Math.max(s.bar._y-factor, 17);
this._parent._parent.scroll();
if (Math.abs(factor)<1) {
factor = 0;
s.bar._y = Math.max(s.bar._y-factor, 17);
delete this.onEnterFrame;
this._parent._parent.stopScroll();
}
};
};
s.scrolltrack.onPress = function() {
if (s.bar._ymouse>(s.bar._y+s.bar._height)) {
this._parent._parent.scroll();
var newY = Math.min((this._parent._parent.h-17)-s.bar._height, s.bar._y+((s.scrollTrack._height/s.bar._height)*30));
s.bar.onEnterFrame = function() {
this._y += (newY-this._y)/3;
if (Math.abs(this._y-newY)<1.2) {
delete this.onEnterFrame;
this._parent._parent.stopScroll();
}
};
} else if (s.bar._y>s.bar._ymouse) {
this._parent._parent.scroll();
var newY = Math.max(17, s.bar._y-((s.scrollTrack._height/s.bar._height)*30));
s.bar.onEnterFrame = function() {
this._y += (newY-this._y)/3;
if (Math.abs(this._y-newY)<1.2) {
delete this.onEnterFrame;
this._parent._parent.stopScroll();
}
};
}
};
}
};
FUISmoothScrollbar.prototype.scroll = function() {
var c = this._parent[this._targetInstanceName];
var m = this.mask;
var s = this.scroll_bar.bar;
var y = this._y;
var scrollMaxi = (c._height)-(m._height);
var distScroll = (this.h-34)-(s._height);
this.onEnterFrame = function() {
var prc = -((s._y-17)*scrollMaxi)/distScroll;
c._y += Math.round(((prc+y)-c._y)/3);
};
};
FUISmoothScrollbar.prototype.stopScroll = function() {
var c = this._parent[this._targetInstanceName];
var m = this.mask;
var s = this.scroll_bar.bar;
var y = this._y;
var scrollMaxi = (c._height)-(m._height);
var distScroll = (this.h-34)-(s._height);
this.onEnterFrame = function() {
var prc = -((s._y-17)*scrollMaxi)/distScroll;
c._y += Math.round(((prc+y)-c._y)/3);
if (Math.abs(c._y-(prc+y))<1.2) {
c._y = Math.round(prc+y);
delete this.onEnterFrame;
}
};
};
#endinitclip
this.dead._visible = false;