Q: Are my private keys secured?
A: Yes they are secured, your private keys never leave your browser.
Q: How is this secure? Its on a web browser!
A: This wallet has replicated the core features of Zero Classic's daemon in JavaScript! So the process of creating and signing the transactions are all done within the browser. No sensitive information is sent through the network.
Q: Can I have the source code?
A: Here you go
Q: Why are you doing this?
A: This wallet was inspired by MyZenWallet & MyBitcoinZ, which was inspired by MyEtherWallet's mission statement: to provide the people the ability to interact with the ZERC blockchain easily, without having to run a full node.