private String unitConver(int len)
	{
		String reVal;
		
		switch(len)
		{
		   case 2:
			   reVal = "十";break;
		   case 3:
			   reVal = "百";break;
		   case 4:
			   reVal = "千";break;
		   case 5:
			   reVal = "万";break;
		   case 6:
			   reVal = "十";break;
		   case 7:
			   reVal = "百";break;
		   case 8:
			   reVal = "千";break;
		   default:
			   reVal = "";
		}
		return reVal;
		
	}