// checks if search string is valid
function validSearch(text)
{
  if($('searchfield').value.length<3)
  {
    alert(text);
    return false;
  }
  return true;
}

function  expandCollapse(id) {
  var browser=navigator.appName;
  var button = $('button_' + id);
  var service = $('service_' + id);
  
  button.toggleClassName('active');
  if (service.visible())
  {
    if (browser == 'Netscape')
      new Effect.BlindUp(service);
    else
      service.hide();
  }
  else
    if (browser == 'Netscape')
      new Effect.BlindDown(service);
    else
      service.show();
}

function switchProduct(id) {
  $$('.button_product').each(function(obj) {
    obj.removeClassName('active');
  });
  $('button_product_' + id).addClassName('active');
  
  $$('.product').each(function(obj) {
    obj.hide();
  });
  $('product_' + id).show();
  if($('subpage_content').visible())
    $('subpage_content').hide();
}