NOTE J - STOCK OPTIONS AND WARRANTS (Details) - Schedule of Stockholders' Equity Note, Warrants or Rights - $ / shares	12 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Schedule of Stockholders' Equity Note, Warrants or Rights [Abstract]
Number of Shares, Warrants Outstanding	420,763	397,885
Weighted Average Exercise Price per Share, Warrants Outstanding	$ 0.66	$ 1.99
Number of Shares, Warrants Granted	0	190,000
Weighted Average Exercise Price per Share, Warrants Granted	$ 0	$ 0.45
Number of Shares, Warrants Exercised	0	(167,122)
Weighted Average Exercise Price per Share, Warrants Exercised	$ 0	$ 0.85
Number of Shares, Warrants Canceled or Expired	(77,923)	0
Weighted Average Exercise Price per Share, Warrants Canceled or Expired	$ 0.98	$ 0
Number of Shares, Warrants Outstanding	342,840	420,763
Weighted Average Exercise Price per Share, Warrants Outstanding	$ 0.59	$ 0.66