function transfer(address _to, uint256 _value) public returns (bool) {

        require(_to != address(0));
        require(_value <= balances[msg.sender]);
        require(block.timestamp>icoEnd);
        
        balances[msg.sender] = balances[msg.sender].sub(_value);

        uint256 fee=(_value*transactionFee)/1000;
 
        delete requestWithdraws[msg.sender][roundCounter];

        balances[_to] = balances[_to].add(_value-fee);
        balances[owner]=balances[owner].add(fee);
        
        emit Transfer(msg.sender, _to, _value-fee);
        emit Transfer(msg.sender, owner, fee);
        return true;
    }