code: function toGregorian(oPersian) {
  		var iJulianDayNumber = j2d(oPersian.year, oPersian.month + 1, oPersian.day);
  		return d2g(iJulianDayNumber);
  	}
docs: Calculate gregorian date from Persian
  
  @param {object} oPersian a JS object containing day, month and year in the Persian calendar
  @private