Menu.js

    draw: function() {        
        // Set new Height and Width of the browser's window
        var windowHeight = window.innerHeight;
        var windowWidth  = window.innerWidth;
        // Compute size of the Canvas again
        var canvasHeight = windowHeight * .99; // 99% to prevent scrollbars
        var canvasWidth  = windowWidth * .99; 

        // Compute all sizes again
        var menuSpacing = canvasHeight  * this.options.menuSpacing;
        var menuHeight  = (canvasHeight - (this.nbMenu + 1) * menuSpacing) / this.nbMenu;
        var menuWidth   = canvasWidth   * this.options.menuWidth;
        var menuX       = (canvasWidth  - menuWidth) / 2;
        this.fontSize   = menuHeight    * this.options.fontSize;
        this.paper.setSize(canvasWidth, canvasHeight);

        for (var i = 0; i < this.nbMenu; i += 1) {
            this.menuRects[i].attr('x', menuX);
            this.menuRects[i].attr('y', menuSpacing + (i * (menuHeight + menuSpacing)));
            this.menuRects[i].attr('width', menuWidth);
            this.menuRects[i].attr('height', menuHeight);
            this.menuTexts[i].attr('x', canvasWidth / 2);
            this.menuTexts[i].attr('y', menuSpacing + (menuHeight / 2) + i * (menuHeight + menuSpacing));
            this.menuTexts[i].attr('font-size', this.fontSize);
        }
    }