var tempsTransitionNews = 0.5*1000;
	var tempsNewsalisationNews = 10*1000;
	
	var currentPositionNews = 1;
	var alphaValue = 0.4;
	var vignetteHeight = 83;
	var newsWidth = 585;
	
	
	function defil_auto() {
		$('#news_btn_'+currentPositionNews).attr("class", "");
		currentPositionNews++;
		if(currentPositionNews==4) currentPositionNews=1;
		$('#news_btn_'+currentPositionNews).attr("class", "actif");
		$('#home_top #news ul').animate({
			'left' : newsWidth*(-(currentPositionNews-1))
		},tempsTransitionNews);
	}

$(document).ready(function(){
	
	$('#home_top #news').css('overflow','hidden');

	
	var news_tab = $('#home_top #news ul li');
	var numberOfVignettes = news_tab.length;
	
	
	$('#home_top #news').append('<ol></ol>');
	for(i=1;i<=3;i++){
		$('#home_top #news ol').append('<li id="news_btn_'+i+'">'+i+'</li>');
		if(i==currentPositionNews) $('#news_btn_'+i).attr("class", "actif");
		else $('#news_btn_'+i).attr("class", "");
		
		$('#news_btn_'+i)
		.click(function() { 
			$('#news_btn_'+currentPositionNews).attr("class", "");
			currentPositionNews = $(this).attr('id').replace("news_btn_","");
			$('#news_btn_'+currentPositionNews).attr("class", "actif");
			$('#home_top #news ul').animate({
				'left' : newsWidth*(-(currentPositionNews-1))
			},tempsTransitionNews);
			clearInterval(timer);
			return false;
		});
		
		$('#news_'+i)
		.mouseover(function() {
			var current = $(this).attr('id').replace("news_","");
			$('#news_'+current+' p.desc').show();
		})
		.mouseout(function() { 
			var current = $(this).attr('id').replace("news_","");
			$('#news_'+current+' p.desc').hide();
		});
	}
	var timer=setInterval("defil_auto();", tempsNewsalisationNews);
  	
});