8. STOCKHOLDERS EQUITY (Tables)

6 Months Ended

Oct. 31, 2012

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		20,217,891
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		493,247
Total shares of common stock reserved for issuance		24,600,142