The <object> tag is used by Internet Explorer 3.0 or later on Windows platforms or any browser that supports the use of the
Flash ActiveX control. The <embed> tag is used by Netscape Navigator 2.0 or later, or browsers that support the use of the
Netscape-compatible plug-in version of Flash Player.
When an ActiveX-enabled browser loads the HTML page, it reads the values set on the <object> and ignores the
<embed> tag. When browsers using the Flash plug-in load the HTML page, they read the values set on the <embed>
tag and ignore the <object> tag.
Noncompliant code example
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" width="100" height="100">      <!-- Non-Compliant -->
  <param name="movie" value="movie_name.swf" />
</object>
<embed src="movie_name.swf"                                                                 <!-- Non-Compliant -->
       width="550"
       height="400"
       type="application/x-shockwave-flash"
       pluginspage="http://www.macromedia.com/go/getflashplayer" />
Compliant solution
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" width="100" height="100">      <!-- Compliant -->
  <param name="movie" value="movie_name.swf" />
  <embed src="movie_name.swf"                                                               <!-- Compliant -->
       width="550"
       height="400"
       type="application/x-shockwave-flash"
       pluginspage="http://www.macromedia.com/go/getflashplayer" />
</object>