8. STOCKHOLDERS EQUITY (Tables)

9 Months Ended

Jan. 31, 2013

Stockholders Equity Tables

Schedule of shares of common stock reserved for issuance

	Number of Shares Reserved
Common shares reserved for issuance under outstanding option grants and available for issuance under our stock incentive plans		20,150,287
Common shares reserved for and available for issuance under our Employee Stock Purchase Plan		3,889,004
Common shares issuable upon exercise of outstanding warrants		374,803
Total shares of common stock reserved for issuance		24,414,094