d) A Javascript code file:

i. A separate javascript file should be included in your main file;

ii. Some functions should be defined in your javascript file;

iii. At least two events should be triggered using javascript;

iiii. Use at least one dialog box, such as alert, confirmation, and prompt;

v. Use DOM to change the CSS style of your page, change the HTML elements and attributes in your page, and react to HTML events in your page;