Magento

<reference name="top.links">
	   <action method="addLink" translate="label title">
                    <label>Condiciones de compra</label>
                    <url>condiciones-compra-cestas-lotes-navidad</url>  <!-- can use full url also -->
                    <title>Condiciones de compra</title>
                    <prepare>true</prepare> <!-- set true if adding base url param -->
                    <urlParams helper="core/url/getHomeUrl"/> <!-- base url - thanks @Russ! -->
                    <!-- there are a few param you can send to do different things in <urlParams> 
                             dig into app/code/core/Mage/Core/Model/Url.php, around line 803 -->                   
 
                    <!-- below adds #add-fragment to the end of your url -->
                    <!-- <urlParams><_fragment>add-fragment</_fragment></urlParams> -->
 
                    <!-- below adds ?add-query to the end of your url -->
                    <!-- <urlParams><_query>add-fragment</_query></urlParams> -->
 
                    <!-- below gives you a new session id (i think...)-->
                    <!-- <urlParams><_nosid>true</_nosid></urlParams> -->
 
                    <!-- below replaces double quotes, single quotes, greater than, and less than signs 
                             to their respective url escaped replacements (%22, %27, %3E, %3C) -->
                    <!-- <urlParams><_escape>i'm-a-blog-url</_escape></urlParams> -->
 
                    <position>100</position>
                    <liParams/>
                    <aParams>class=""</aParams>
                    <beforeText></beforeText>
                    <afterText></afterText>
                </action>
 </reference>

$this->_select->from(array('region'=>$this->_regionTable),
    array('region_id'=>'region_id', 'country_id'=>'country_id', 'code'=>'code', 'default_name'=>'default_name')
);

$exclude_regions = array ('AS','AK','AA','AC','AE','AK','AM','AP','FM','GU','HI','MH','MP','PW','PR','VI','AF');
 
$this->_select->from(array('region'=>$this->_regionTable),
    array('region_id'=>'region_id', 'country_id'=>'country_id', 'code'=>'code', 'default_name'=>'default_name')
)
->where('code NOT IN (?)', $exclude_regions);

         <config>
   <modules>
      <DD_AddAttributeCategory>
         <version>0.1.0</version>
      </DD_AddAttributeCategory>
   </modules>
   <global>
      <resources>
         <AddAttributeCategory_setup>
            <setup>
               <module>DD_AddAttributeCategory</module>
               <class>Mage_Catalog_Model_Resource_Eav_Mysql4_Setup</class>
            </setup>
            <connection>
               <use>core_setup</use>
            </connection>
         </AddAttributeCategory_setup>
      </resources>
   </global>
</config>

 <?php
$installer = $this;
$installer->startSetup();
$installer->addAttribute('catalog_category', 'imagen_destacados', array(
                        'type'              => 'varchar',
                        'backend'           => 'catalog/category_attribute_backend_image',
                        'frontend'          => '',
                        'label'             => 'Imagen Destacados',
                        'input'             => 'image',
                        'class'             => '',
                        'source'            => '',
                        'global'            => 0,
                        'visible'           => 1,
                        'required'          => 0,
                        'user_defined'      => 0,
                        'default'           => '',
                        'searchable'        => 0,
                        'filterable'        => 0,
                        'comparable'        => 0,
                        'visible_on_front'  => 0,
                        'unique'            => 0,
                        'position'          => 1,
                    ));
$installer->endSetup();?>

 <config>
    <modules>
        <DD_AddAttributeCategory>
            <active>true</active>
            <codePool>local</codePool>
        </DD_AddAttributeCategory>
    </modules>
</config>