[TYPO3-english] fluid + v6.1 <script>, <iframe> stripped out to text &lt; iframe

[jaco graaff]

I am having an issue where all <script>* and <iframe>* tags get's converted 
to html text in the front-end:

e.g. embedded video in iframe:

&lt;iframe width=&quot;282&quot; height=&quot;300&quot; 
src=&quot;http://www.youtube.com/embed/T68kU5rVOoM?fs=1&quot; 
frameborder=&quot;0&quot;&gt;&lt;/iframe&gt;

instead of

<iframe width"=282" height="300" 
src="http://www.youtube.com/embed/T68kU5rVOoM?" ></iframe>

There must be a Typoscript setting somewhere that sets the accepted tags

Thanks

Jaco