function clearNewsletter(param) {
  if ($F('newsletterEmail') == param)
  $('newsletterEmail').value = '';
}

function rewriteNewsletter(param) {
  if ($F('newsletterEmail') == '')
  $('newsletterEmail').value = param;
}


function clearSearch(param) {
  if ($F('searchText') == param)
  $('searchText').value = '';
}

function rewriteSearch(param) {
  if ($F('searchText') == '')
  $('searchText').value = param;
}