De-activate Drawing function

programming flash
1

I have used the following code to create a drawing facility on my site, what code would I use to de-activate this? Thanks…

var pts:Array;
var holder:MovieClip;
var isEditing:Boolean = false;
var mouseListener:Object = new Object();
mouseListener.onMouseDown = function() {
var dep:Number = _root.getNextHighestDepth();
holder = _root.createEmptyMovieClip(“holder”+dep, dep);
pts = new Array();
isEditing = true;
pts.push([_root.cursernew._x, _root.cursernew._y]);
holder.lineStyle(1, 0xcccccc);
holder.moveTo(_root.cursernew._x, _root.cursernew._y);
};
mouseListener.onMouseUp = function() {
isEditing = false;
smooth();
holder.onEnterFrame = function() {
this._alpha -= 0.2;
this._alpha<=0 ? [delete this.onEnterFrame, this.removeMovieClip()] : null;
};
};
mMove = function () {
cursernew._x = _root._xmouse;
cursernew._y = _root._ymouse;
updateAfterEvent();
if (!isEditing) {
return;
}
pts.push([_root.cursernew._x, _root.cursernew._y]);
smooth();
};
function smooth() {
if (!pts) {
return;
}
var i = pts.length-1;
if (i<1) {
return;
}
var ptx = pts*[0];
var pty = pts*[1];
var ancx = pts[i-1][0];
var ancy = pts[i-1][1];
ptx += ancx;
pty += ancy;
holder.curveTo(ancx, ancy, ptx/2, pty/2);
}