Christmas Project

Your task, if you choose to accept it (you have no choice), is to create a Christmas advent calendar.

It should have a table with a cell for each day of Christmas. In the cells should be the day number and when you click on the number the background of the cell changes to a Christmas image of some kind.

Advanced:

Try to make it so that you can only click on the numbers in order (1, 2, 3, etc).

document.getElementById(the ID of the cell).background= the image filename