function description(id,test){
	
	if(test == 0)
	{
		$('fleche_'+id).innerHTML = '<img src="http://www.biobernai.com/images/ouvert.jpg" alt="ouvert" />';
		$('description'+id).style.display='block';
		$('open').value = id;
	}
	else
	{
		if(id == $('open').value)
		{
			
			$('fleche_'+$('open').value).innerHTML = '<img src="http://www.biobernai.com/images/ferme.jpg" alt="ferme" />';
			$('description'+$('open').value).style.display='none';
			
			$('open').value = 0;
		}
		else
		{
			
			$('fleche_'+$('open').value).innerHTML = '<img src="http://www.biobernai.com/images/ferme.jpg" alt="ferme" />';
			$('description'+$('open').value).style.display='none';
			$('fleche_'+id).innerHTML = '<img src="http://www.biobernai.com/images/ouvert.jpg" alt="ouvert" a/>';	
			$('description'+id).style.display='block';
			$('open').value = id;	
		}
	}
};