Ajax Availability Calendar

Somehow it seems that only the first 3 months can load in this calendar.

I have changed the number of months to 3 and now the calendar appears to work perfect. But when you go to the next 3 months too fast, things go wrong again....

This is the url .

http://www.chirooskaarke.be/kalender/

Hi, I installed the calendar on my website, but when I tried to open the page, there was an error where the months should appear: Warning: mktime() expects parameter 4 to be long, string given in (mywebsite)/ac-includes/functions.inc.php on line 20 Warning: cal_days_in_month() expects parameter 2 to...