Stockholders' Equity (Tables)

12 Months Ended

Jun. 30, 2012

The following table provides a reconciliation of all US$ warrants for the years ended June 30, 2012 and 2011:


	Year Ended June 30,
	2012					2011
	Number of Warrants			Weighted Average Exercise Price		Number of Warrants		Weighted Average Exercise Price
Balance at beginning of year		7,614,748		$	7.35		7,062,248	$	7.53
Issued		—			—		552,500		5.00
Expired		(5,550,038	)		7.79		—		—

Balance and exercisable at end of year		2,064,710		$	6.17		7,614,748	$	7.35

The following table provides a reconciliation of all A$ warrants for the years ended June 30, 2012 and 2011:


	Year Ended June 30,
	2012				2011
	Number of Warrants		Weighted Average Exercise Price A$		Number of Warrants			Weighted Average Exercise Price A$
Balance at beginning of year		205,479		7.68		3,935,433			9.54
Expired		—		—		(3,729,954	)		9.65

Balance and exercisable at end of year		205,479		7.68		205,479			7.68

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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