NOTY is a jQuery plugin that makes it easy to create alert - success - error - warning - information - confirmation messages as an alternative the standard alert dialog. Each notification is added to a queue. (Optional)
The notifications can be positioned at the: top - topLeft - topCenter - topRight - center - centerLeft - centerRight - bottom - bottomLeft - bottomCenter - bottomRight
Whether you call it a lightbox, modal, popup, or window, jAlert is an excellent replacement / alternative for Simple Modal, FancyBox, or whatever plugin you're used to.