var subcurrency_spender = (function(){

    var div = document.getElementById("subcurrency_spender");
    var display = document.createElement("p");
    div.appendChild(display);

    var contract_id = text_input("contract_id: ", div);
    div.appendChild(contract_id);
    div.appendChild(br());
    var type = text_input("type: ", div);
    div.appendChild(type);
    div.appendChild(br());
    var to = text_input("to: ", div);
    div.appendChild(to);
    div.appendChild(br());
    var amount = text_input("amount: ", div);
    div.appendChild(amount);
    div.appendChild(br());

    var button = button_maker2("send", send);
    div.appendChild(button);
    div.appendChild(br());

    async function send(){
        var cid_key = contract_id.value;
        var Type = parseInt(type.value);
        var account = await merkle.arequest_proof("accounts", keys.pub());
        var nonce = account[2] + 1;
        var fee = 152050;
        var tx = ["sub_spend_tx",
                  keys.pub(),
                  nonce,
                  fee,
                  to.value,
                  parseInt(amount.value),
                  contract_id.value,
                  Type];
        console.log(tx);
        console.log(JSON.stringify(tx));
        var stx = keys.sign(tx);
        var msg = await apost_txs([stx]);
        display.innerHTML = msg;
    };
    return({contract_id: function(x) {contract_id.value = x},
            to: function(x) { to.value = x },
            amount: function(x) { amount.value = x },
            type: function(x) {type.value = x }
           });
})();