renderShip()

function renderShip() {
    // this looks horrible, but it's just for testing, so it's fine I guess
    window.alert("I'M WORKING 1");
    // spriteShip.onload = function() {
        window.alert("I'M WORKING 2");
        ctx.drawImage(spriteShip, ship.spritePosX * 16, ship.spritePosY * 16, ship.width, ship.height, ship.posX, ship.posY, ship.width, ship.height);
    // }
    spriteShip.onError = function(){alert('Error!');};
}