f';
    }

    // function watchBalance() {
    //     var coinbase = web3.eth.coinbase;

    //     var originalBalance = web3.eth.getBalance(coinbase).toNumber();
    //     document.getElementById('coinbase').innerText = 'coinbase: ' + coinbase;
    //     document.getElementById('original').innerText = ' original balance: ' + originalBalance + '    watching...';

    //     web3.eth.filter('latest').watch(function() {
    //         var currentBalance = web3.eth.getBalance(coinbase).toNumber();
    //  