function limittextarea(textarea, size)
{
   if (textarea.value.length > size)
   {
     textarea.value = textarea.value.slice(0, size);
   }
}

function textCounter(field, countfield, maxlimit)
{
  if (field.value.length > maxlimit)
  {
    field.value = field.value.substring(0, maxlimit);
  }
  else
  {
    countfield.value = maxlimit - field.value.length;
  }
}

function compterReste(field, countfield, maxlimit)
{
  if(field.value.length < (maxlimit + 1))
  {
   countfield.value = maxlimit - field.value.length;
  }
}