Statements of Cash Flows (USD $)	3 Months Ended
	Nov. 30, 2012	Nov. 30, 2011
Net loss and comprehensive loss	$ (2,218,664)	$ (1,687,405)
Depreciation and amortization	37,272	37,059
Stock-based compensation	289,912	289,055
Loss on disposition of property and equipment		118
Decrease (increase) in receivables	(170,244)	223,563
Decrease (increase) in inventories	59,899	(57,055)
Decrease (increase) in other current assets	(16,304)	23,324
Increase (decrease) in accounts payable	14,590	(130,524)
Increase (decrease) in accrued liabilities	34,756	(66,070)
Increase (decrease) in customer deposits	16,270
Increase (decrease) in deferred revenue	(3,318)	(10,329)
Net cash used in operating activities	(1,955,831)	(1,378,264)
Purchase of property and equipment	(4,160)	(29,120)
Net decrease in cash and cash equivalents	(1,959,991)	(1,407,384)
Cash and cash equivalents, beginning of period	11,102,508	17,135,968
Cash and cash equivalents, end of period	$ 9,142,517	$ 15,728,584