Sorry for my late reply…
The problem was :( … PHP 5.2 in my server!!
And i needed to maintain 5.2… so i was able to fix this by changing the code a bit…
All is functional now.. you can check it here
http://www.autarquicas2013.cm-valongo.pt
I’ve taken the refresh’s (the charts we’re updating every 10 seconds) as the event already finished..
Thanks for your help.