function cacheInfosStage(){
	document.getElementById('tr_date_debut').style.display = 'none';
	document.getElementById('tr_date_fin').style.display = 'none';
	document.getElementById('tr_etablissement').style.display = 'none';
}


function montreInfosStage(){
	
	var display = 'table-row';
	if(navigator.appName == "Microsoft Internet Explorer"){
		display = 'block';
	}

	document.getElementById('tr_date_debut').style.display = display;
	document.getElementById('tr_date_fin').style.display = display;
	document.getElementById('tr_etablissement').style.display = display;
}