window.addEvent('domready', function() {
	
	var fxIta = new Fx.Styles($('cont_ita'), {duration: 1000, transition: Fx.Transitions.linear});
	var fxFra = new Fx.Styles($('cont_fra'), {duration: 1000, transition: Fx.Transitions.linear});
	var fxEng = new Fx.Styles($('cont_en'), {duration: 1000, transition: Fx.Transitions.linear});
	var fxDeu = new Fx.Styles($('cont_de'), {duration: 1000, transition: Fx.Transitions.linear});
	
	
	$('cont_ita').setStyle('opacity',1);
	$('cont_fra').setStyle('opacity',0);
	$('cont_en').setStyle('opacity',0);
	$('cont_de').setStyle('opacity',0);
	
	$('cont_ita').setStyle('display','block');
	$('cont_fra').setStyle('display','none');
	$('cont_en').setStyle('display','none');
	$('cont_de').setStyle('display','none');
	
	
	$('ita').addEvent('click', function(){
		fxIta.start({
		    'opacity': [0, 1]
		});
		fxFra.start({
		    'opacity': [1, 0]
		});
		fxEng.start({
		    'opacity': [1, 0]
		});
		fxDeu.start({
		    'opacity': [1, 0]
		});
		$('cont_ita').setStyle('display','block');
		$('cont_fra').setStyle('display','none');
		$('cont_en').setStyle('display','none');
		$('cont_de').setStyle('display','none');
	});
		
	$('fra').addEvent('click', function(){
		fxIta.start({
		    'opacity': [1, 0]
		});
		fxFra.start({
		    'opacity': [0, 1]
		});
		fxEng.start({
		    'opacity': [1, 0]
		});
		fxDeu.start({
		    'opacity': [1, 0]
		});
		$('cont_ita').setStyle('display','none');
		$('cont_fra').setStyle('display','block');
		$('cont_en').setStyle('display','none');
		$('cont_de').setStyle('display','none');
	});
	
	$('en').addEvent('click', function(e){
		fxIta.start({
		    'opacity': [1, 0]
		});
		fxFra.start({
		    'opacity': [1, 0]
		});
		fxEng.start({
		    'opacity': [0, 1]
		});
		fxDeu.start({
		    'opacity': [1, 0]
		});
		$('cont_ita').setStyle('display','none');
		$('cont_fra').setStyle('display','none');
		$('cont_en').setStyle('display','block');
		$('cont_de').setStyle('display','none');
	});
	
	$('de').addEvent('click', function(){
		fxIta.start({
		    'opacity': [1, 0]
		});
		fxFra.start({
		    'opacity': [1, 0]
		});
		fxEng.start({
		    'opacity': [1, 0]
		});
		fxDeu.start({
		    'opacity': [0, 1]
		});
		$('cont_ita').setStyle('display','none');
		$('cont_fra').setStyle('display','none');
		$('cont_en').setStyle('display','none');
		$('cont_de').setStyle('display','block');
	});
});