var userStylePreference = Cookie.read('style-preference');

if (userStylePreference == 'darkside') {
	$$('body').addClass('darkside');
}

window.addEvent('domready', function(){
  //inject colourSwitcher buttons
  new Element('a', {href: '#', id: 'styleswitch'}).inject($('header'), 'after');
if (userStylePreference == 'darkside') {
	$$('a#styleswitch').setProperty('html', 'step into the light');
} else {
	$$('a#styleswitch').setProperty('html', 'come over to the darkside');
}


  $$('a#styleswitch').addEvent('mouseenter', function(){
	$$('a#styleswitch').setStyle('cursor','pointer');
  });
  $$('a#styleswitch').addEvent('click', function(event){
	event.stop()
	if (userStylePreference == 'darkside') {
		$$('a#styleswitch').setProperty('html', 'come over to the darkside');
    	$$('body').removeClass('darkside');
		userStylePreference = ''
    } else {
	event.stop()
		$$('a#styleswitch').setProperty('html', 'step into the light');
    	$$('body').addClass('darkside');
		userStylePreference = 'darkside'
    }
    Cookie.write('style-preference', $$('body').getProperty('class'), {
	    path: '/',
	    duration: 1
    });
  });

});