function initialise_edit_document ()
{
	if ( $('date-evenement') )
	{
		if ( $('id_affichage').value != 1 )
			$('date-evenement').setStyle('display','block');
		else
			$('date-evenement').setStyle('display','none');
		
		$('id_affichage').addEvent('change', function (event)
		{
			if ( this.value != 1 )
				$('date-evenement').setStyle('display','block');
			else
				$('date-evenement').setStyle('display','none');
		});
	}
}

window.addEvent('domready', initialise_edit_document);