public boolean isChanging(int now) {
		  switch (mType)
		  {
		  case 0:
			   return false;

		  case 1:
			   return (now >= mStartTime && now < mEndTime);

		  case 2:

			   return (now >= mStartTime);
			   
		  default:
			   return false;
		  }
	 }