Inserting monitoring javascript (Piwik)

Hello,

An inserted Javascript empeaches my Jottit mainpage to be edited (the editor actually opens, but then the preview show a blank page).

Is there anything I could do? The monitoring does work --> it seems that Piwik is able to use the inserted script.

The website is: luli.jottit.com

I have tried to insert the code here, but it does not show correctly (even surrounded with the appropriate 'code' html code)

Thanks in advance for any help,

Eric, Brussels, Belgium