Basic Contract Api

contract metaCoin {
	mapping (address => uint) public balances;
	function metaCoin() {
		balances[msg.sender] = 10000;
	}
	function sendToken(address receiver, uint amount) returns(bool successful){
		if (balances[msg.sender] < amount) return false;
		balances[msg.sender] -= amount;
		balances[receiver] += amount;
		return false;
	}
}

contract coinCaller{
	metaCoin m;
	function sendCoin(address coinContractAddress, address receiver, uint amount){
		m = metaCoin(coinContractAddress);
		m.sendToken(receiver, amount);
	}
}