function logObject(object,mode)
{
  var end_line = "\n";
  switch(arguments.length)
  {
    case 0:
      throw({message: "logObject function needs one argument at least"});
      break;
    case 2:
      if("html" == mode)
      {
        end_line = "<br />";
      }
      break;
  }
  var wProp = new Array();
  var acc = "";
  for (var props in object)
  {
    wProp.push(props);
  }
  wProp.sort();
  for (var i = 0; i < wProp.length; i++)
  {
    acc += wProp[i] + end_line;
  }
  return acc;
}

$(document).ready(retour_haut);
$(window).resize(retour_haut);
$(window).scroll(retour_haut);

function retour_haut()
{
  if($('html')[0].scrollHeight != $('html')[0].offsetHeight)
  {
    $('.bottom_item_actions .back_to_top').css('display','inline');
  }
  else
  {
    $('.bottom_item_actions .back_to_top').css('display','none');
  }
}