There are 2 previous versions of this script.
// ==UserScript==
// @name kindleboards ad remover
// @namespace http://www.kindleboards.com
// @description Removes the middle ad layer on kindleboards.com
// @include http://www.kindleboards.com/*
// ==/UserScript==
var divtags = document.body.getElementsByTagName("div");
for (i=0; i < divtags.length; i++)
{
var classAttr = divtags[i].getAttribute("class");
switch (classAttr)
{
case "maindiv":
{
divtags[i].parentNode.removeChild(divtags[i]);
}
case "topbar2":
{
divtags[i].parentNode.removeChild(divtags[i]);
}
default:
}
}