Add image in tweet while sharing from website

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ASP.NET

twitter

MVC4

Hi Everyone,

I have created twitter button and added below code to work it. Its working fine.
Now I want to an image with this tweet. Any one knows, How to add image in tweet?
Please tell me if any one have done this.

<script>
    $("#aTwitter").click(function () {
        var url = encodeURIComponent("@TempData["AppUrl"]\n#hashlink");
        var text = encodeURIComponent("I am loving the @TempData["AppName"] !\n Download it today: ");
        window.open("https://twitter.com/home?status=" + text + url,
            'twitter-tweet-dialog','width=626,height=436');
        return false;
    });

</script>

What I have tried:

I have tried to create tweet button on my website and have done it properly but not able to add image in the same tweet.Your little help will save my time .....