Write, test, validate, and debug (if necessary) markup documents and JavaScript files for the following:

Modify the document described in Exercise 6.2 to make the buttons toggle their respective copies of your image on and off so that, at any time, the document may include none, one, two, three, or four copies of your image. The initial document should have no images shown.

Data from exercise 6.2

Modify the document described in Exercise 6.1 to add four buttons labeled, respectively, Northwest, Northeast, Southwest, and Southeast. When they’re pressed, the buttons must move your image to the specified corner of the text. Initially, your image must appear in the northwest (upperleft) corner of the text.