function setActiveStyleSheet(title) {

	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;

		}

	}

	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 createCookie(name,value,days) {

	if (days) {

		var date = new Date();

		date.setTime(date.getTime()+(days*24*60*60*1000));

		var expires = "; expires="+date.toGMTString();

	} else var expires = "";

	document.cookie = name+"="+value+expires+"; path=/";

}



function readCookie(name) {

	var nameEQ = name + "=";

	var ca = document.cookie.split(';');

	for (var i = 0;i < ca.length;i++) {

		var c = ca[i];

		while (c.charAt(0)==' ') c = c.substring(1,c.length);

		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);

	}

	return null;

}



if (document.getElementsByTagName) {



	window.onload = function(e) {

		var cookie = readCookie("style");

		var title = cookie ? cookie : getPreferredStyleSheet();

		setActiveStyleSheet(title);

	}



	window.onunload = function(e) {

		var title = getActiveStyleSheet();

		createCookie("style", title, 365);

	}



	var cookie = readCookie("style");

	var title = cookie ? cookie : getPreferredStyleSheet();

	setActiveStyleSheet(title);



}