geth --testnet --datadir="x:\a\b\GethWithRopsten\"

var web3 = new Web3(new web3.providers.IpcProvider('\\.\pipe\geth.ipc',net));

function div(uint256 a, uint256 b) internal pure returns (uint256) {
    return a / b;
}

function setPrices(uint256 newSellPrice, uint256 newBuyPrice) onlyOwner public {
    sellPrice = newSellPrice;
    buyPrice = newBuyPrice;
}

function buy() payable onlyIfEnabled public {
    uint256 amount = msg.value.div(buyPrice);
    _transfer(this, msg.sender, amount);
}

function _transfer(address _from, address _to, uint256 _value) internal returns (bool){
   require (_to != 0x0);
   require (balanceOf[_from] >= _value);
   require (balanceOf[_to].add(_value) > balanceOf[_to]);
   require(!frozenAccount[_from]);
   require(!frozenAccount[_to]);
   balanceOf[_from] = balanceOf[_from].sub(_value);
   balanceOf[_to] = balanceOf[_to].add(_value);
   emit Transfer(_from, _to, _value);
   return true;
}