Call it a drop box, popover, popin or hover box... basically I created my first DHTML "pop up" and I'd like to add a Click Here To Close or just "Close" link within the body itself.

What do I do?

The contents of the window are in PopIn.js . How can I create my Close link?

Please and thank you.

PS. Would this sort of a close link work in IE, Firefox and Safari?