8. Net Loss per Common Share (Tables)

9 Months Ended

Sep. 30, 2013

Notes to Financial Statements

Loss Per share computation

	Three Month Period Ended				Nine Month Period Ended
	September 30,				September 30,
	2013		2012		2013		2012
Basic and diluted weighted average common stock shares outstanding		70,106,312		69,679,854		70,005,207		69,679,854
Potentially dilutive securities excluded from loss per share computations:
Common stock options		19,743,747		20,248,227		19,743,747		20,248,227
Common stock purchase warrants		7,406,250		7,718,750		7,406,250		7,718,750