function (a, k) {
    var f = window.event;
    if (!f) {
        var d = arguments.callee ? arguments.callee.caller : null;
        if (d) {
            var j = 30;
            while (d.arguments.callee.caller && --j) d = d.arguments.callee.caller;
            f = j && d.arguments.length ? d.arguments[0] : null
        }
    }
    this._additionalInput = null;
    var h = this._form;
    if (a === null || typeof a === "undefined" || this._isCrossPost) {
        this._postBackSettings = this._createPostBackSettings(false);
        this._isCrossPost = false
    } else {
        var c = this._masterPageUniqueID,
            l = this._uniqueIDToClientID(a),
            g = document.getElementById(l);
        if (!g && c) if (a.indexOf(c + "$") === 0) g = document.getElementById(l.substr(c.length + 1));
        if (!g) if (Array.contains(this._asyncPostBackControlIDs, a)) this._postBackSettings = this._createPostBackSettings(true, null, a);
        else if (Array.contains(this._postBackControlIDs, a)) this._postBackSettings = this._createPostBackSettings(false);
        else {
            var e = this._findNearestElement(a);
            if (e) this._postBackSettings = this._getPostBackSettings(e, a);
            else {
                if (c) {
                    c += "$";
                    if (a.indexOf(c) === 0) e = this._findNearestElement(a.substr(c.length))
                }
                if (e) this._postBackSettings = this._getPostBackSettings(e, a);
                else {
                    var b;
                    try {
                        b = f ? f.target || f.srcElement : null
                    } catch (n) {}
                    b = b || this._activeElement;
                    var m = /__doPostBack\(|WebForm_DoPostBackWithOptions\(/;

                    function i(b) {
                        b = b ? b.toString() : "";
                        return m.test(b) && b.indexOf("'" + a + "'") !== -1 || b.indexOf('"' + a + '"') !== -1
                    }
                    if (b && (b.name === a || i(b.href) || i(b.onclick) || i(b.onchange))) this._postBackSettings = this._getPostBackSettings(b, a);
                    else this._postBackSettings = this._createPostBackSettings(false)
                }
            }
        } else this._postBackSettings = this._getPostBackSettings(g, a)
    }
    if (!this._postBackSettings.async) {
        h.onsubmit = this._onsubmit;
        this._originalDoPostBack(a, k);
        h.onsubmit = null;
        return
    }
    h.__EVENTTARGET.value = a;
    h.__EVENTARGUMENT.value = k;
    this._onFormSubmit()
}