gistfile1.js

function getPageHistory() {
	var hist = $.cookie('history');

	try {
		hist = JSON.parse(hist);
		
		if (false == $.isArray(hist)) hist = [];
	}
	catch (e)
	{
		hist = [];
	}

	return hist;
}


function setPageHistory(hist) {
	$.cookie('history', JSON.stringify(hist), { expires: 30, path: "/" });
}

function appendToHistory(url) {
	var history = getPageHistory();

	history.splice(0, 0, url);

	setPageHistory(history);
}

function findFirst(pages /* an array... e.g. ['channel-management', 'life-sciences'] */) {
	var history = getPageHistory();

	for (i in history) {
		var pg = history[ i ];

		for (j in pages) {
			if (pg.indexOf( pages[j] ) > -1)
			{
				return pages[j];
			}
		}
	}

	return false;
}

(function($)
{
	$(function() {
		appendToHistory(window.location.href)
	});
})(jQuery);

usage.js

var lastPage = findFirst(['channel-management', 'life-sciences']);
console.log(lastPage);