SWFObject

Offers two optimized Flash Player embed methods; a markup based approach and a method that relies on JavaScript

Offers a JavaScript API that aims to provide a complete tool set for embedding SWF files and retrieving Flash Player related information

Utilizes only one small JavaScript file (10Kb / GZIPed: 3.9Kb)

Is the successor of SWFObject 1.5, UFO and the Adobe Flash Player Detection Kit

Intends to unify all existing Flash Player embed methods and provide a new standard for embedding Adobe Flash Player content