hi
i recommend sdp to my company, but it manager said that the major problem of this program is the default calendar and he wants to use jalali calendar instead of it.
i found the javascript calendar that is very similar to the default calender of sdp. http://farhadi.ir/downloads/JalaliJSCalendar-1.4.tar.gz

if possible for you please help me how can i do it myself.

for example how can i replace this javascript calendar instead of the default calendar.

i will glad if you guide me.