fbs_default = 'Cautare...';
fbs = document.getElementById('s');
if (fbs) {
  fbs.style.color = 'gray';
  if ('' == fbs.value) {
    fbs.value = fbs_default;
  }
  fbs.onfocus = function () {
    fbs.style.color = 'black';
    if (fbs_default == fbs.value) {
      fbs.value = '';
    }
  }
  fbs.onblur = function (){
    fbs.style.color = 'gray';
    if ('' == fbs.value) {
      fbs.value = fbs_default;
    }
  }
}