Script and Style tags content removed

Hi,

I see that content that is present between the <script> and </script> tags is being removed on going to 'wysiwyg' mode and coming back to 'source' mode. The same is happening with <style> and </style> tags.

Can you please let me know if i am missing some configuration parameter. I see that ckeditor.com/demo works fine and the content is not stripped there. But in my environment the content is getting stripped. I want this to not happen.

Thanks
Naresh