function updateSliderState(count_slider_sections, slider_number)
{
	var content = $('div#content').removeClass('das-kochbuch');
	content.removeClass('wuensch-dir-sass');
	content.removeClass('last-section');
	content.removeClass('first-section');
	
	if ( slider_number + 1 == count_slider_sections )
	{	
		content.addClass('last-section');
	}
		
	
	if ( slider_number == 0  ) 
	{
		content.addClass('first-section');
		content.addClass('wuensch-dir-sass');
	}

	if ( slider_number == 1 )
	{
		content.addClass('das-kochbuch');
	}

}


$(function($) {
	
	
	// count slider sections
	var count_slider_sections = $('div#glider div.section').size();
	
	// update buttons on launch
	updateSliderState(count_slider_sections, 0);
	
	
	// prev + next button events
	var $next = $('a#slider-next-button').click(function(){ $slider.xSlider('slide','next', function(event, instance){
		updateSliderState(count_slider_sections, instance.value);
	}); });
	
	
	var $prev = $('a#slider-prev-button').click(function(){ $slider.xSlider('slide','prev', function(event, instance){
		updateSliderState(count_slider_sections, instance.value);
	}); });
	
	var $slider = $('#glider').xSlider({slider: '.section', next: $next, prev: $prev, cycle: false, speed: 200});
	

	$('a#slide-to-wuensch-dir-sass').click(function(){ $slider.xSlider('slide', 0, function(event, instance){
		updateSliderState(count_slider_sections, instance.value);
	}); });
	$('a#slide-to-das-kochbuch').click(function(){ $slider.xSlider('slide', 1, function(event, instance){
		updateSliderState(count_slider_sections, instance.value);
	}); });
	
	
	// Lightbox
	$('a.lightbox').lightBox({overlayOpacity: 0.7});

	
		
		
});