HTML Reference Guide
<EMBED> ... </EMBED> EMBED
The EMBED element is the method used to integrate Netscape Plug-In technology into a web page. The element has three mandatory attributes [HEIGHT, SRC, and WIDTH] but it is extensible in that it allows any number of additional custom attributes that are dependent on the Plug-In used.
The browser should first try to determine which Plug-In to use based on the file extension of the file in the SRC attribute. If it can not determine what Plug-In to use, it will then query the user to determine what to do.
height - Specifies the height of the embedded component on the screen.
src - Indicates the URL of the multimedia object file.
width - Specifies the width of the embedded component on the screen.