Relationship between the mouse and mc

/****************************
* Mouse control: image moving instance *
*****************************/
////////////////////////////////
// Initialize data //
VarLeftest = 50;
VarRightest = 350;
VarStartX =-50;
VarStartY =-3;
VarClick =False;
VarNowTime = 0;
////////////////////////////////
// Load related components //
_ Root. attachMovie("MouseHand", "Hand", 1000 );
Hand._ X = _ Root. _ xmouse;
Hand._ Y = _ Root. _ ymouse;
_ Root. attachMovie("MyPic", "Pic", 11 );
Pic._ X= StartX;
Pic._ Y= StartY;
Pic._ Xscale= Pic._ Yscale= 60;
_ Root. createEmptyMovieClip("Screen", 10 );
With(Screen ){
LineStyle (1, 0x000000, 0 );
BeginFill (0x000000,100 );
MoveTo (leftest, 0 );
LineTo (rightest, 0 );
LineTo (rightest, 200 );
Linto (leftest, 200 );
LineTo (leftest, 0 );
}
Pic.SetMask(Screen );
////////////////////////////////
// Mouse follow //
StartDrag("Hand", True, Leftest, 0, rightest, 200 );
Mouse. hide();
////////////////////////////////
// Image control //
VarOldX =_ Root. _ xmouse;
VarHSpeed = 3;// Image moving speed
VarZSpeed = 1;// Enlarge the image
Mouse. addListener(_ Root);// Define the listener
_ Root. onMouseDown = Function(){
Click =True;
Hand.GotoAndStop("Click");
VarOldWidth = pic._ Xscale;
VarOldHeight = pic._ Yscale;
VarMouseX =_ Root. _ xmouse;
VarMouseY =_ Root. _ ymouse;
VarPicX = pic._ X;
VarPicY = pic._ Y;
VarMoveX, moveY;
Pic.OnEnterFrame = Function(){
If (This. _ xscale<100 | this._ Yscale& Lt; 100 ){
// Enlarge the image
This. _ xscale+ = ZSpeed;
This. _ yscale+ = ZSpeed;
// When the image is zoomed in at the center of the mouse click, the coordinates of the image are moved.
MoveX = (mouseX-picX)/oldWidth *This. _ xscale+ PicX)-mouseX;
MoveY = (mouseY-picY)/oldHeight *This. _ yscale+ PicY)-mouseY;
This. _ x= PicX-moveX;
This. _ y= PicY-moveY;
} Else {
Delete this. onEnterFrame;
}
};
};
_ Root. onMouseUp = Function(){
PublicAS ();
Pic. onEnterFrame =Function(){
// Scale down an image to its initial state.
If(This._ Xscale> 60 | this._ Yscale> 60 ){
This._ Xscale+ = (60-this._ Xscale)/10;
This._ Yscale+ = (60-this._ Yscale)/10;
This. _ x + = (startX-this. _ x)/10;
This. _ y + = (startY-this. _ y)/10;
} Else {
Delete this. onEnterFrame;
}
};
};
////////////////////////////////
// Control the image //
_ Root. onEnterFrame = Function(){
// Mouse highlights //
VarElapse =GetTimer ()-NowTime;
If(Elapse-3000> = 0 &&! Click ){
Elapse = 0;
Click =True;
NowTime =GetTimer ();
Hand.GotoAndPlay (2);
}
// Shift left and right //
VarNowX =_ Root. _ xmouse;
If(OldX-nowX) <0 | nowX> = rightest) & (pic._ X+ Pic._ Width)> 350 ){
// Move the cursor right and the image left
Pic._ X-= HSpeed;
PublicAS ();
}
If(OldX-nowX)> 0 | nowX <= leftest) & pic._ X<50 ){
// Move the cursor left and the image right
Pic._ X+ = HSpeed;
PublicAS ();
}
OldX =_ Root. _ xmouse;
};
// Some common code
FunctionPublicAS (){
Hand.GotoAndStop(1 );
NowTime =GetTimer();
Click =False;
}