Is it possible to create a dhtmlxcalendar with no date selected (highlighted)?
Unforunately, there are no public methods to do that.
You can try to use the following approach:
mCal = new dhtmlxCalendarObject(…);
mCal.setDate (new Date(0));
mCal.date.setMonth((new Date()).getMonth());
mCal.date.setFullYear((new Date()).getFullYear());
mCal.draw();