/**
 * Stylesheet toggle variation on styleswitch stylesheet switcher.
 * Built on jQuery.
 * Under an CC Attribution, Share Alike License.
 * By Kelvin Luck ( http://www.kelvinluck.com/ )
 **/

(function ($) {
	// Local vars for toggle
	var availableStylesheets = [];
	var activeStylesheetIndex = 0;

	// To loop through available stylesheets
	$.stylesheetToggle = function () {
		activeStylesheetIndex++;
		activeStylesheetIndex %= availableStylesheets.length;
		$.stylesheetSwitch(availableStylesheets[activeStylesheetIndex]);
	};

	// To switch to a specific named stylesheet
	$.stylesheetSwitch = function (styleName) {
		$('link[@rel*=style][title]').each(

		function (i) {
			this.disabled = true;
			if (this.getAttribute('title') == styleName) {
				this.disabled = false;
				activeStylesheetIndex = i;
			} else {
				$('#stylehseet-toggler').text(this.getAttribute('title'))
			}
		});

		createCookie('style', styleName, 365);
	};

	// To initialise the stylesheet with it's 
	$.stylesheetInit = function () {
		$('link[rel*=style][title]').each(

		function (i) {
			availableStylesheets.push(this.getAttribute('title'));
		});
		var c = readCookie('style');
		if (c) {
			$.stylesheetSwitch(c);
		}
	};
})(jQuery);

// cookie functions http://www.quirksmode.org/js/cookies.html


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;
}

function eraseCookie(name) {
	createCookie(name, "", -1);
}
// /cookie functions