swfObject

flashObject

http://blog.deconcept.com/swfobject/

 SWFObject is a small Javascript file used for embedding Macromedia Flash content. The script can detect the Flash plug-in in all major web browsers (on Mac and PC) and is designed to make embedding Flash movies as easy as possible. It is also very search engine friendly, degrades gracefully, can be used in valid HTML and XHTML 1.0 documents*, and is forward compatible.

SWFObject is the SWF embed script formerly known as FlashObject. The name was changed due to legal / trademark reasons.