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sarah_pdx / MeFi comment numbering

// ==UserScript==
// @name          MeFi comment numbering
// @namespace     http://www.metafilter.com/
// @description   Numbers comments - handy in longboat threads. (cosmetic update from the original http://userscripts-mirror.org/scripts/review/24902)
// @include       http://*.metafilter.com/*
// @include       http://metafilter.com/*
// A modified version of MatthewR's original http://userscripts-mirror.org/scripts/review/24902
// ==/UserScript==
if (/.*metafilter\.com\/(\d{1,7}\/|mefi\/|comments\.mefi).*/.test(window.location)) {
	var elements = document.evaluate('//div/span[@class="smallcopy"]/parent::node()',document,null,XPathResult.ORDERED_NODE_SNAPSHOT_TYPE,null);
	for (var i=1,element;(element = elements.snapshotItem(i));i++) {
		var count = document.createElement("span");
		count.setAttribute("style","font-size:10px;position:absolute;left:-20px;top:5px;");
		count.innerHTML = i;
		element.insertBefore(count,element.childNodes[0]);
	}
}