Related pages:
<iframe src="http://www.w3schools.com" name="iframe_a" title="Iframe Example"></iframe>
<iframe src="http://www.welt.de/" name="iframe_a" title="Iframe Example"></iframe>
<iframe src="http://www.youtube.com/watch?v=gCNeDWCI0vo" name="iframe_a" title="Iframe YouTube Example"></iframe>
<iframe src="http://www.youtube.com/embed/gCNeDWCI0vo" name="iframe_a" title="Iframe YouTube 'embed' Example"></iframe>
Registry Hive HKEY_LOCAL_MACHINE Registry Path Software\Policies\Mozilla\lockPref Value Name browser.frames.enabled Value Type REG_DWORD Enabled Value 1 Disabled Value 0