| Schedule of Net Deferred Tax Assets | 
        
Net deferred tax assets consist of the following components as of April 30: 
  
 |  
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
   | 
2013  | 
   | 
2012  | 
 
NOL  | 
$  | 
(35,883,321  | 
)  | 
   | 
$  | 
(35,372,287  | 
)  | 
 
Net Loss  | 
(1,598,102  | 
)  | 
   | 
(1,899,312  | 
)  | 
 
Shares issued for services  | 
984,696  | 
 
  | 
   | 
1,570,280  | 
 
  | 
 
Depreciation/Amortization  | 
—  | 
 
  | 
   | 
24,659  | 
 
  | 
 
Impairment/disposal of Assets  | 
—  | 
 
  | 
   | 
79,503  | 
 
  | 
 
Shares issued for interest expense  | 
102,203  | 
 
  | 
   | 
101,750  | 
 
  | 
 
Amortization of Debt Discount  | 
(5,695  | 
)  | 
   | 
(10,798  | 
)  | 
 
Loss on conversion of debt  | 
39,000  | 
 
  | 
   | 
—  | 
 
  | 
 
Gain on forgiveness of debt  | 
(277,085  | 
)  | 
   | 
(370,619  | 
)  | 
 
Bad Debt Expense  | 
—  | 
 
  | 
   | 
6,497  | 
 
  | 
 
NOL  | 
$  | 
(36,638,304  | 
)  | 
   | 
$  | 
(35,883,321  | 
)  | 
 
Effective Rate  | 
0.34  | 
 
  | 
   | 
0.34  | 
 
  | 
 
Deferred Tax Asset  | 
(12,457,023  | 
)  | 
   | 
(12,200,329  | 
)  | 
 
Valuation Allowance  | 
12,457,023  | 
 
  | 
   | 
12,200,329  | 
 
  | 
 
Deferred Tax Asset  | 
$  | 
—  | 
 
  | 
   | 
$  | 
—  | 
 
  | 
 
  
 
 |