List of Listeners:
- mouseover: When the first box is moused over, it changes its color and give instructions for the next box.
- keyPress: When h is pressed, hide the first box. When s is pressed, show the second box and show the third.
- click: When the second box is clicked, it turns orange and gives the next instructions.
- dblclick: When the third box is doubleclicked, music is played.
- ended: When the music finishes playing, the boxes turn green and their text changes.
Technical Acheivement: Added music!!