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Note 5 - Stockholders' Equity (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Mar. 21, 2016
Mar. 31, 2016
Mar. 31, 2015
Jun. 30, 2015
Dec. 31, 2015
Interest Expense [Member]          
Stock Issued During Period, Value, New Issues   $ 99,492 $ 0    
Selling, General and Administrative Expenses [Member] | Accrued and Unpaid Salary and Unreimbursed Expenses [Member] | Officers and Consultants [Member]          
Common Stock, Shares, Issued   338,262 312,739    
Stock Issued During Period, Value, Issued for Services   $ 73,658 $ 110,827    
Selling, General and Administrative Expenses [Member] | Part of 2007 Equity Incentive Plan and Options Issued Outside of 2007 Equity Incentive Plan [Member]          
Allocated Share-based Compensation Expense   301,839 $ 255,625    
Selling, General and Administrative Expenses [Member] | The 2007 Equity Incentive Plan [Member]          
Allocated Share-based Compensation Expense $ 119,971        
Selling, General and Administrative Expenses [Member] | Outside of the 2007 Plan [Member] | Board Of Directors [Member]          
Stock Granted, Value, Share-based Compensation, Gross   $ 86,963      
Selling, General and Administrative Expenses [Member] | Outside of the 2007 Plan [Member] | Board of Directors and Vendors [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross     577,818    
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price     $ 0.36    
Other Liabilities, Current     $ 136,750    
Stock Granted, Value, Share-based Compensation, Gross     $ 206,076    
Board of Directors and Vendors [Member] | The 2007 Equity Incentive Plan [Member]          
Sharebased Compensation Arrangement By Sharebased Payment Award Options Expiration Period Extension 5 years        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 307,777        
Outside of the 2007 Plan [Member] | Board Of Directors [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   263,523      
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price   $ 0.33      
Other Liabilities, Current   $ 67,500      
Outside of the 2007 Plan [Member] | Vendors [Member]          
Other Liabilities, Current   $ 12,975      
Outside of 2007 Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   263,523 577,818    
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price   $ 0.33 $ 0.36    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value     $ 49,549    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value   $ 94,905      
Employee Stock Option [Member]          
Share Based Compensation Arrangement by Share Based Payment Award Fair Value Assumptions Expected Forfeiture Rate       0.00%  
Preferred Stock, Shares Outstanding   0     0
Stock Issued During Period, Value, New Issues   $ 173,150      
Common Stock, Shares, Issued   86,268,517     85,788,153
Stock Issued During Period, Shares, New Issues   282,240