Array.prototype.noEmpty = function(f, warn, nofleche) {
 if (!f) return true;
 var n = true;
 var err = $('<span class="formerror2">&nbsp;</span>');
 if (!nofleche) $('.formerror2').remove();
 else $('.formerror').removeClass('formerror');
 $(this).each(function(){
  var elem = this;
  var field = $(f).find(':input[name='+elem+']');
  switch (field.attr('type')) {
   case 'radio':
    var val = field.filter(':checked:first').val();
   break;
   case 'checkbox':
    var val = field.is(':checked') ? '1' : '';
    break;
   default:
    var val = field.val();
   break;
  }

  if (jQuery.trim(val) == '') {
   if (!nofleche) {
    var err2 = err.clone();
    var pos = $(field[0]).position();
    if (pos.left >= 30) $(err2).css('left', (pos.left-30)+'px').css('top', pos.top+'px').appendTo('#global');
   }
   else field.addClass('formerror');
   
   n = false;
  }
 });

 if (!n && warn) alert(warn == true ? 'Veuillez remplir tous les champs marqués d\'une étoile SVP' : warn);
 return n;
}