How to show all the manufactures or brand list in magento?

$product = Mage::getModel('catalog/product');
$attributes = Mage::getResourceModel('eav/entity_attribute_collection')
->setEntityTypeFilter($product->getResource()->getTypeId())
->addFieldToFilter('attribute_code', 'manufacturer');
$attribute = $attributes->getFirstItem()->setEntity($product->getResource());
$manufacturers = $attribute->getSource()->getAllOptions(false);

foreach ($manufacturers as $manufacturer)

{

echo Mage::getBaseUrl(); ?>catalogsearch/advanced/result/?manufacturer[]=$manufacturer['value']

echo Mage::getBaseUrl(); ?>catalogsearch/advanced/result/?manufacturer[]=$manufacturer['label']

}