/* overrides the asp.net postback with something that will accept jquery form submit hooks before the postback */
window.__doPostBack = function (eventTarget, eventArgument) {
    var originalvalues = [
                theForm.__EVENTTARGET.value,
                theForm.__EVENTARGUMENT.value
            ];
    theForm.__EVENTTARGET.value = eventTarget;
    theForm.__EVENTARGUMENT.value = eventArgument;
    try {
        $(theForm).submit();
    }
    finally {
        theForm.__EVENTTARGET.value = originalvalues[0];
        theForm.__EVENTARGUMENT.value = originalvalues[1];
    }
};