Access the caller DOM-object from the OnBegin function from AjaxAction

Problem: access the DOM-object that called the AjaxAction in the OnBegin function. Here is one solution: Question about parameters in OnBegin AjaxOptions Is there a cleaner way to access it?

Examples like these do not work:

function beginContactList(args) { // this is the OnBegin
    // Highlight selected group
    $('#leftColumn li').removeClass('selected');
    $(this).parent().addClass('selected');

    // Animate
    $('#tabs-1开发者_如何学编程').fadeOut('normal');
}

Because the this object is does not contain information about the DOM.

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Checkout the answer to this question, there they talk about automatically inject additional parameters into the ajax context:
ASP.NET MVC : AJAX ActionLink- Target an HTML attribute