This page says Last onel Your code should generate 100 boxes when the page is loaded. Their locations should be random between 0-400 for the top position and 0-400 for the left position. When the mouse moves over a box, have it remove itself. Hint: consider the "this" variable. When the last box is being deleted, create an alert that says "Last one!". If the user clicks the "Generate More" button, add 100 more random boxes.