function hideExtraSearch(){
  window.document.getElementById('extrasearch').style.display = 'none';
}

function showExtraSearch(){
  window.document.getElementById('extrasearch').style.display = 'block';
}

function checkValue(){
  if($('#searchstr').val() == '' || $('#searchstr').val() == ' Product Search'){
    alert('Please enter search criteria');
    return false;
  }
  return true;
}