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function toggleSlideshow(el)
{
	if($(el).visible())
	{
		Cookie.set('nwallen_slideshow', 0);
		new Effect.BlindUp($(el),{duration: 0.8});
		$('slide_button').update('Show Slideshow');
	}
	else
	{
		Cookie.set('nwallen_slideshow', 1);
		new Effect.BlindDown($(el),{duration: 0.8});
		$('slide_button').update('Hide Slideshow');
	}
}

document.observe('dom:loaded', function() {
	if (/*Cookie.get('nwallen_slideshow') == null || */Cookie.get('nwallen_slideshow') == 1)
	{
		$('slide_img').show();
		$('slide_button').update('Hide Slideshow');
	}
	else
	{
		$('slide_img').hide();
		$('slide_button').update('Show Slideshow');
	}
});