Inline editor: avoid focus on element with focusManager

How can I use the FocusManager to keep the focus on the current editor session when i click on several DOM elements?

Look at this page:

http://media.dday.it/roby/editor4/samples/inlineall.html

The three column under the slider are editable. 

Imagine that 'im writigin in the first column. When i want to insert a youtube video i past a youtube url in the text field above the slider, but when I click on the text input field I lose the editor focus. So I have to click again on editor and then i can push the button "insert media".

Is possible with FocusManager to keep focus on the current editor when i click on some page elements?

Thank you