(function(){
    const q = (selector) => document.querySelector(selector);

    const gameContainer = q('#gameContainer');

    let gCanvasElement = null;

    const setDimensions = () => {
        gameContainer.style.position = 'absolute';
        var winW = parseInt(window.getComputedStyle(gameContainer).width, 10);
        var winH = parseInt(window.getComputedStyle(gameContainer).height, 10);

        gCanvasElement.setAttribute('width', winW);
        gCanvasElement.setAttribute('height', winH);
    }

    window.setDimensions = setDimensions;
})();