Accrued expenses: (Tables)

12 Months Ended

Sep. 30, 2012

Accrued expenses:

Schedule of accrued expenses

	September 30, 2012		September 30, 2011
Warranty	$	850,499	$	955,549
Salary, benefits and payroll taxes		531,862		476,152
Professional fees		330,858		352,559
Income taxes payable		132,980		152,658
Materials on order		43,374		89,392
Other		834,239		525,079
	$	2,723,812	$	2,551,389