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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
 6 Months Ended 12 Months Ended 129 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Jun. 30, 2012
Cash flows from operating activities:            
Loss for the period $ (1,372,411) $ (1,056,921) $ (2,364,339) $ (2,788,446) $ (1,202,296) $ (13,889,930)
Adjustments to reconcile loss for the period to net cash used in operating activities:            
Depreciation 12,741 10,398 23,045 19,153 20,837 145,227
Increase (decrease) in liability for employee rights upon retirement (5,945) 9,553 1,127 16,284 34,485 217,757
Stock-based compensation 197,237 189,355 378,072 14,575 12,171 1,428,140
Stock-based interest compensation to convertible notes holders          1,214,943    1,214,943
Change in the fair value of warrants with round-down protection (43,051)             (43,051)
Linkage difference on principal of loans from stockholders 5,869 (8,733) 24,934 15,909 10,617 182,918
Interest on convertible notes          78,192    78,192
Gain on sale of property and equipment          (912)    (912)
Gain from trading marketable securities             (756) (12,920)
Changes in assets and liabilities:            
Decrease (increase) in other current assets (8,121) 27,658 (23,968) (46,562) 577 (91,408)
Increase (decrease) in accounts payable 67,012 31,671 64,697 (14,120) (8,530) 140,154
Increase (decrease) in other current liabilities 22,694 (80,814) (19,681) 123,147 (29,835) 230,080
Net cash used in operating activities (1,123,975) (877,833) (1,916,113) (1,367,837) (1,162,730) (10,400,810)
Cash flows from investment activities:            
Decrease (increase) in funds in respect of employee rights upon retirement (6,470) (11,699) 14,436 (25,387) (28,819) (109,274)
Purchase of property and equipment (3,516) (47,750) (54,619) (8,725) (5,007) (212,289)
Proceeds from sale of property and equipment          4,791    4,791
Investment in marketable securities                (388,732)
Proceeds from sale of marketable securities             135,195 406,995
Short-term loan granted to related party, net of repayments             127,551 (14,252)
Net cash provided by (used in) investment activities (9,986) (59,449) (40,183) (29,321) 228,920 (312,761)
Cash flows from financing activities            
Credit from banking institutions (repayment)    (18,977) (18,669) (75,845) 88,265 (6,218)
Proceeds from issuance of convertible notes          1,144,000    1,144,000
Repayment of convertible notes          (527,396)    (527,396)
Proceeds from issuance of Common Stock, net of issuance expenses    934,829 2,401,214 2,357,032 378,000 10,406,380
Proceeds from stockholders loans                347,742
Net cash provided by financing activities    915,852 2,382,545 2,897,791 466,265 11,364,508
Effect of exchange rate changes on cash and cash equivalents (4,176) 28,457 (23,993) (68,417) 3,275 107,430
Increase (decrease) in cash and cash equivalents (1,138,137) 7,027 402,256 1,432,216 (464,270) 758,367
Cash and cash equivalents at beginning of the period 1,896,504 1,494,248 1,494,248 62,032 426,302   
Cash and cash equivalents at end of the period 758,367 1,501,275 1,896,504 1,494,248 62,032 758,367
Supplementary information on financing activities not involving cash flows:            
Conversion to convertible notes to Common Stock (see Notes 10C)          694,796      
Fair value of warrants with down-round protection issued in connection with Common Stock issuances (See Note 9C)       $ 83,899