convert calendar!

Using my Dolibarr
1

i want to know if the calendar can be converted to persian calendar (hijri shamsi)?

2

Download this
Jalali Calendar

and then in dolibarr\htdocs\main.inc.php

set this line code

//تاریخ جلالی
print ‘<script type=“text/javascript” src="’.DOL_URL_ROOT.’/core/js/jalaliCalendar/jjalali.js"></script>’."\n";
print ‘<script type=“text/javascript” src="’.DOL_URL_ROOT.’/core/js/jalaliCalendar/jcalendar.js"></script>’."\n";
print ‘<script type=“text/javascript” src="’.DOL_URL_ROOT.’/core/js/jalaliCalendar/jcalendar-setup.js"></script>’."\n";
print ‘<script type=“text/javascript” src="’.DOL_URL_ROOT.’/core/js/jalaliCalendar/jcalendar-fa.js"></script>’."\n";
print ‘<link rel=“stylesheet” type=“text/css” media=“all” href="’.DOL_URL_ROOT.’/core/js/jalaliCalendar/skins/aqua/jtheme.css" title=“Aqua” />’."\n";
//==========

then in

dolibarr\htdocs\core\js\lib_head.js.php in showDP function

jCalendar.setup({
inputField : dateFieldID, // id of the input field
button : dateFieldID+“Button”, // trigger for the calendar (button ID)
ifFormat : ‘%Y/%m/%d’, // format of the input field
dateFormat : ‘%Y/%m/%d’, // format of the input field
dateType : ‘jalali’,
singleClick : true,
weekNumbers : false,
//langNumbers : true
});
return;