function confirmUnregisteringServer(uint _serverIndex) public {
        Web3Server storage server = servers[_serverIndex];
        
        require(server.unregisterCaller!=address(0x0) && server.unregisterTime < now);

        uint payBackOwner = server.deposit;
        if (server.unregisterCaller != server.owner) {
            payBackOwner -= server.deposit/5;  
            server.unregisterCaller.transfer( unregisterDeposit + server.deposit - payBackOwner );
        }

        if (payBackOwner>0)
            server.owner.transfer( payBackOwner );

        removeServer(_serverIndex);
    }