Enter_btn.addEventListener(MouseEvent.CLICK, go);

var quizModel:Array = [{q:"2+2", a:"4"}, {q:"What colour is a banana = ?", a:"Yellow"}];
var user_ans:Array = new Array();
var newQuizModel:Array = shuffleArray(quizModel);
stage.addEventListener(KeyboardEvent.KEY_DOWN, go);


function showQuiz(index:int):void
{
    question_txt.text = newQuizModel[index]["q"];
}


var index:int = 0;
question_txt.text = newQuizModel[index]["q"];
var userAnswer:String = "";
function go(e:MouseEvent)
{


    userAnswer = answers_txt.text;

    if (userAnswer == newQuizModel[index]["a"])
    {
        rightwrong_txt.text = "Your answer is correct!";
    }
    else
    {
        rightwrong_txt.text = "Your answer is wrong";
        return;
    }

    index++;
    index%= quizModel.length;
    showQuiz(index);
}

function shuffleArray(arr:Array):Array
{
    var l:Number = arr.length - 1;

    for (var it:uint = 0; it<l; it++)
    {
        var r:int = Math.round(Math.random() * l);  /// l is an L
        var tmp:Object = arr[it];
        arr[it] = arr[r];
        arr[r] = tmp;
    }
    return arr;
}


showQuiz(index);