function setActiveStyleSheet(title, automated) {
	var i, a, main;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
			a.disabled = true;
			if(a.getAttribute("title") == title) { a.disabled = false; }
		}
	}
	// tracking - only capture event if change was user initiated
	if (!automated) {
		captureLinkAlt(window.location,"Annual Report 2008","","action=arTextSizer2008-" + title + "-EN");
	}
	
	createCookie("style", title, 365);
}

function getActiveStyleSheet() {
	var i, a;
	for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) {
			return a.getAttribute("title");
		}
	}
	return null;
}

function getPreferredStyleSheet() {
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("rel").indexOf("alt") == -1 && a.getAttribute("title")) {
			return a.getAttribute("title");
		}
	}
	return null;
}

function toggleTextSize() {
	var currStyle = getActiveStyleSheet();
	if (currStyle == "Standard Text") {
		setActiveStyleSheet('Larger Text');
	} else {
		setActiveStyleSheet('Standard Text');
	}
}

window.onload = function(e) {
	var cookie = readCookie("style");
	var title = cookie ? cookie : getPreferredStyleSheet();
	setActiveStyleSheet(title,true);
}

window.onunload = function(e) {
	var title = getActiveStyleSheet();
	createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title,true);