vballboa,
The correct syntax for embed tag should look like <embed src="http://cutesoft.net/uploads/clock.swf" width="280" height="220" quality="high" wmode="transparent" allowfullscreen="true" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" ></embed>
Firefox will change the code if you use wrong syntax code for embed tag.
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