function ChangeOnglet(onglet, contenu, image){
    document.getElementById('desc_expo').style.display = 'none';
    document.getElementById('map_expo').style.display = 'none';      
    document.getElementById(contenu).style.display = 'block';  

    document.getElementById('title_expo').className = '';
    document.getElementById('title_map').className = '';     
    document.getElementById(onglet).className = 'active';

	document.getElementById('arrondi_onglets').style.backgroundImage = 'url(img_web/'+image+'.jpg)';
	if (onglet == 'title_map'){myOnLoad();}
}