Refrigerator magnets are displayed for sale outside a medical marijuana dispensary on Venice Beach in Los Angeles, California, in this July 19, 2010 file photo. California, the U.S. state that first allowed sales of medicinal marijuana in 1996, may take away all restrictions on adult use of the drug in a November vote, giving local governments the option to regulate sales and growing of marijuana. Picture taken July 19, 2010. To match Special Report MARIJUANA/CALIFORNIA.