gmail script to remove the "<Name> is busy. You may be interrupting" and red circle w/ minus sign. Buggy. Works best when chat window w <Name> is open

iknowbest.js

// ==UserScript==
// @name         i know best
// @namespace    rossdoran.com
// @version      0.1
// @description  i do
// @author       ross doran
// @match        https://mail.google.com/*
// @grant        none
// @require http://code.jquery.com/jquery-latest.js
// @require https://greasyfork.org/scripts/1003-wait-for-key-elements/code/Wait%20for%20key%20elements.js?version=2765
// ==/UserScript==
 
function whoKnowsBestChat()
{

var x = $("img[src$='images/cleardot.gif'][title$='Busy']");
x.attr("class", "Hi c6");
    
    var warnings = document.getElementsByClassName('js');

for (var i = 0; i < warnings.length; i++)
{
warnings[i].innerHTML = "";
}   
}

function whoKnowsBestList()
{

var x = $("img[src$='images/cleardot.gif'][alt$='Busy']");
x.attr("class", "Hi c6");

var y = $("img[src$='images/cleardot.gif'][title$='Busy']");
y.attr("class", "Hi c6");

}

waitForKeyElements(".js", whoKnowsBestChat);
waitForKeyElements("img", whoKnowsBestList);

bugs: loading console resets images. mousing over chat list resets images.