Hello jacksa
Thank you for the screenshot.
The sidebar is reloaded because RosarioSIS could not determine your click (here opening the "Calendars" program) was an AJAX call.
A page request is an AJAX / XHR call if and only if the X-Requested-With
header is set to XMLHttpRequest
.
I believe you are using Chrome browser, right?
You can check the HTTP headers while browsing RosarioSIS and check the X-Requested-With
header is present:
http://infoheap.com/chrome-view-http-headers/
Here using Firefox, you can see the header is present in the request for the Modules.php?modname=School_Setup/Calendar.php
page:
Do you have the same problem on the demo site?
In case not, you should try to reinstall RosarioSIS on a clean basis.