/**
* 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($){
	var availableStylesheets = [];
	var activeStylesheetIndex = 0;
	$.stylesheetToggle = function(){
		activeStylesheetIndex ++;
		activeStylesheetIndex %= availableStylesheets.length;
		$.stylesheetSwitch(availableStylesheets[activeStylesheetIndex]);
	};
	$.stylesheetSwitch = function(styleName){
		$('link[@rel*=style][title]').each(function(i){
			this.disabled = true;
			if (this.getAttribute('title') == styleName) {
				this.disabled = false;
				activeStylesheetIndex = i;
			}
		});
		createCookie('style', styleName, 365);
	};
	$.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