function Crowdsale() public {
    price = 1 ether;
    wallet = msg.sender;
    dollar = new StandardToken("Dollar", "HWD", 2, 2000000);
    vote = new StandardToken("Vote", "HWV", 2, 500000);
    StandardToken(dollar).transfer(wallet, 500000);
}

function tokensAvailable() public view returns (uint256) {
    return StandardToken(dollar).balanceOf(this);
}

call to Crowdsale.tokensAvailable
[call] from:0xba5116fea48692a505c5e2a898d4c803f0ca5d2a, to:Crowdsale.tokensAvailable(), data:60659...59a92, return:
    {
      "0": "uint256: 1500000"
    }