wikipedia-tts-friendly-markup.user.js

// ==UserScript==
// @name           Wikipedia TTS-friendly Markup
// @description    Include a button in the toolbar on Wikipedia articles to toggle the inclusion of elements not suitable for feeding into a screen-reader. 
// @namespace      http://weston.ruter.net/
// @include        http://en.wikipedia.org/wiki/*
// ==/UserScript==


var noReadEls = [];
Array.forEach(document.querySelectorAll('#bodyContent sup, #toc, .editsection'), function(el){
	noReadEls.push(el);
});

function toggleNoReadEls(){
	Array.forEach(noReadEls, function(el){
		// Toggle off
		if(el.parentNode){
			var comment = document.createComment(el.textContent);
			el.WestonPlaceholder = comment;
			el.parentNode.replaceChild(comment, el);
		}
		// Toggle on
		else if(el.WestonPlaceholder){
			el.WestonPlaceholder.parentNode.replaceChild(el, el.WestonPlaceholder);
			el.WestonPlaceholder = null;
		}
	});
}

// Add toggle button to page
var btn = document.createElement('button');
btn.type = 'button';
btn.textContent = "Toggle TTS-friendly Markup";
var toolbarRefNode = document.querySelector('#p-views ul > li:first-child');
var li = document.createElement('li');
li.style.cssText = "line-height:40px;";
li.appendChild(btn);
toolbarRefNode.parentNode.insertBefore(li, toolbarRefNode);
btn.addEventListener('click', toggleNoReadEls, false);