jQuery - get reference to this
<pre><code>function Request(params)
{
    // Stuff stuff stuff

    // And then

    $.ajax(
    {
        type: 'GET',
        url: 'someurl',
        success: this.done
    });
}

Request.prototype.done = function()
{
    // "this" in this context will not refer to the Request instance.
    // How to reach it?
}
</code></pre>
