Google Search Result Highlighting

extension.js

function displayMessage(message, callback) {
	// Display an alert-like message
	var $ = $jquery;
	if (isTesting)
		console.log(message);
	var bg = $('<div/>').appendTo("body");
	bg.css({
		"position" : "fixed",
		"top" : 0,
		"left" : 0,
		"height" : "100%",
		"width" : "100%",
		"z-index" : 100000000001,
		"background-color" : "rgba(130,130,130,0.5)"
	});
	var box = $('<div/>').appendTo("body");
	box.css({
		"position" : "absolute",
		"top" : "30%",
		"left" : "30%",
		"padding" : "5px",
		"height" : "auto",
		"width" : "25%",
		"z-index" : 1000000000000,
		"background-color" : "white",
		"border" : "5px solid black"
	});
	box.append(message);
	setTimeout(function() {
		box.fadeOut("slow", function() {
			box.remove();
			bg.remove();
			callback();
		});
	}, 15000)
}
function logError(e) {
	if (isTesting)
		console.log("Error:", e);
}
function getHostName(href) {
	// http://stackoverflow.com/a/736970
	var l = document.createElement("a");
	l.href = href;
	return l.hostname.replace(/www\./gim, "");
}
function useComment(data) {
	if (isTesting)
		console.log("UseComment", data);
	data = {
		"url" : "#token",
		"comment" : "Congratulations 10% of your basket total will go towards UNICEF"
	};
	displayMessage(data.comment, function() {
		window.location = data.url;
	});
};
function highlightGoogle(data) {
	var links = $jquery(".vsc .r .l");
	var subLinks = $jquery(".sld .r .l");
	if (isTesting)
		console.log("higlight", data, links, subLinks);
	for ( var i = 0; i < links.length; i++) {
		if ($jquery.inArray(links[i], subLinks) !== -1)
			continue;
		var link = $jquery(links[i]);
		if (isTesting)
			console.log(getHostName(link.attr("href")), $jquery.inArray(
					getHostName(link.attr("href")), data), data);
		if ($jquery.inArray(getHostName(link.attr("href")), data) !== -1) {
			link.parent().parent().parent().css({
				"background-color" : "lemonchiffon"
			});
			if (isTesting)
				console.log(link.parent().parent().parent(), link.parent()
						.parent().parent().css("background-color"));
		}
	}
};
function useURLs(data) {
	data = [ "johnlewis.com", "go.com", "facebook.com" ];
	if (isTesting)
		console.log("UseURL", data);
	var current = $jquery.inArray(getHostName(window.location.href), data);
	if (appAPI.matchPages("*.google.*")) {
		$jquery(document).ready(function($) {
			highlightGoogle(data);
		});
	}
	if (isTesting)
		console.log(current);
	if (current === -1 || appAPI.matchPages("*token*"))
		return;
	var url = "";
	appAPI.request.post(url, data[current], useComment, useComment);
};
var url = "";
appAPI.request.post(url, useURLs, useURLs);

var isTesting = true;