        var height=window.innerHeight;
        var aspect=width/height
        var app_container = document.getElementById('app-container');
        app_container.style.width = width+"px";
        app_container.style.height = height+"px";

        var game_canvas = document.getElementById('canvas');
        //game_canvas.style.width = "100%";
        //game_canvas.style.height = height + "px";
        game_canvas.width = width*dpi;
        game_canvas.height = height*dpi;
/*
        if (width*dpi>720){
    