PImage leafImage; //define an image object
  PImage myBackImage; //define an image object
  void setup(){
    leafImage = loadImage("maple_leaf.gif"); //load it
    myBackImage = loadImage("ground.jpg"); //load it
    size(myBackImage.width,myBackImage.height);
  }
  int x, y; //the location of the cursor
  void draw(){
    image(myBackImage,0,0); //draw the ground
    image(leafImage,x,y); //then the leaf
    x += int(random(-5,5)); //random tremblings
    y += int(random(-5,5));
  }
  void mouseDragged(){
    x = mouseX-(leafImage.width/2); //move the cursor
    y = mouseY-(leafImage.height/2);
  }