function UpdateText(phase) {
 switch (phase) {
  case 1: document.getElementById('textChange').innerHTML = ''; setTimeout("UpdateText(2)", 100); break;
  case 2: document.getElementById('textChange').innerHTML = 'A'; setTimeout("UpdateText(3)", 100); break;
  case 3: document.getElementById('textChange').innerHTML = 'Ac'; setTimeout("UpdateText(4)", 100); break;
  case 4: document.getElementById('textChange').innerHTML = 'Act'; setTimeout("UpdateText(5)", 100); break;
  case 5: document.getElementById('textChange').innerHTML = 'Acti'; setTimeout("UpdateText(6)", 100); break;
  case 6: document.getElementById('textChange').innerHTML = 'Activ'; setTimeout("UpdateText(7)", 100); break;
  case 7: document.getElementById('textChange').innerHTML = 'Activi'; setTimeout("UpdateText(8)", 100); break;
  case 8: document.getElementById('textChange').innerHTML = 'Activit'; setTimeout("UpdateText(9)", 100); break;
  case 9: document.getElementById('textChange').innerHTML = 'Activité'; setTimeout("UpdateText(10)", 100); break;
  case 10: document.getElementById('textChange').innerHTML = 'Activités'; setTimeout("UpdateText(11)", 100); break;
  case 11: document.getElementById('textChange').innerHTML = ''; setTimeout("UpdateText(12)", 50); break;
  case 12: document.getElementById('textChange').innerHTML = 'A'; setTimeout("UpdateText(13)", 50); break;
  case 13: document.getElementById('textChange').innerHTML = 'Ac'; setTimeout("UpdateText(14)", 50); break;
  case 14: document.getElementById('textChange').innerHTML = 'Act'; setTimeout("UpdateText(15)", 50); break;
  case 15: document.getElementById('textChange').innerHTML = 'Acti'; setTimeout("UpdateText(16)", 50); break;
  case 16: document.getElementById('textChange').innerHTML = 'Activ'; setTimeout("UpdateText(17)", 50); break;
  case 17: document.getElementById('textChange').innerHTML = 'Activi'; setTimeout("UpdateText(18)", 50); break;
  case 18: document.getElementById('textChange').innerHTML = 'Activit'; setTimeout("UpdateText(19)", 50); break;
  case 19: document.getElementById('textChange').innerHTML = 'Activité'; setTimeout("UpdateText(20)", 50); break;
  case 20: document.getElementById('textChange').innerHTML = 'Activités'; break;
 } 
}
UpdateText(1);