iBox is a lightweight script that lets you overlay images, divs, and HTML on your current page. It is damn easy to install and setup.

Visit the blog post on iBox for more information and download.

1. Images

2. AJAX

Or an external html file [ibox-ajax-test.html] by clicking here || Raw HTML file here: ibox-ajax-test.html

3. Support for JS and non-JS

We have not forgotten about non-JS users. The login form example - JS users see a login form overlay, non-JS users get forwarded to the login page:
Or View our Ajax Login Form

4. Support for overlay of div on existing page

View the content of the div [inner_content] in iBox by clicking here (view source to see div content below)