function validateSearchForm() {
  var keyword = document.getElementById('keyword');
  if (/^\s*$/.test(keyword.value)) { // keyword is null or contains only white space
    return false;
  }
  if (keyword.value == 'I am looking for...') {
    return false;
  }
  return true;
}

function keyword_onfocus() {
  if (document.getElementById('keyword').value == 'I am looking for...') {
    document.getElementById('keyword').value = '';
  } else {
    document.getElementById('keyword').select()
  }
}

function keyword_onblur() {
  if (document.getElementById('keyword').value == '') {
    document.getElementById('keyword').value = 'I am looking for...';
  }
}