var market_liquidity = (function(){
//-record(market_liquidity_tx, {from, nonce, fee, mid, amount, cid1, type1, cid2, type2}).
    var div = document.getElementById("market_liquidity");
    var display = document.createElement("p");
    div.appendChild(display);
    
    var mid = text_input("market id: ", div);
    div.appendChild(br());
    var amount = text_input("amount: ", div);
    div.appendChild(br());
    var button = button_maker2("buy liquidity", doit);
    div.appendChild(button);
    async function doit(){
        var Fee = 152050;
        var Acc = await rpc.apost(["accounts", keys.pub()]);
        if(Acc == "empty") {
            display.innerHTML = "load an account first";
            return(0);
        };
        var market = await merkle.arequest_proof("markets", mid.value);
        if(market === "empty"){
            display.innerHTML = "that market does not exist";
            return(0);
        };
        //-record(market, {id, cid1, type1, amount1, cid2, type2, amount2, shares}).
        var CID1 = market[2];
        var Type1 = market[3];
        var CID2 = market[5];
        var Type2 = market[6];
        var Nonce = Acc[2] + 1;
        var tx = ["market_liquidity_tx", keys.pub(),
                  Nonce, Fee,
                  mid.value, parseInt(amount.value),
                  CID1, Type1, CID2, Type2];
        var txs = [tx];
        var stx = keys.sign(tx);
        var msg = await apost_txs([stx]);
        display.innerHTML = msg;
        keys.update_balance();
    };
    return({
        mid: function(x){mid.value = x},
        amount: function(x){amount.value = x}
    });
})();