I got requirement to create in-page pop up in my project.
Lightbox is a simple, unobtrusive script used to overlay images on the current page. It’s a snap to setup and works on all modern browsers.
My comments: useful for image slideshow. Not useful for custom requirements.
My comments: Very nice and simple, You can use this JS for multiple requirements.
My comments: simple and good, really tiny JS, you can modify and create custom events and effects.
4. Good URL for Reference