# create Output.php.search-by-attribute.diff
--- ./app/code/core/Mage/Catalog/Helper/Output.php	2010-10-06 17:13:09.000000000 +0200
+++ ./app/code/local/Mage/Catalog/Helper/Output.php	2010-10-06 17:12:45.000000000 +0200
@@ -111,6 +111,11 @@
             'product'   => $product,
             'attribute' => $attributeName
         ));
+
+        if ($attributeName != "item" && $attributeName != "description" && $attributeName != "name") {
+            $attributeHtml = "<a>" . $attributeHtml . "</a>";
+        }
+
         return $attributeHtml;
     }

# add patch
mkdir -p ./app/code/local/Mage/Catalog/Helper
cp -n ./app/code/core/Mage/Catalog/Helper/Output.php ./app/code/local/Mage/Catalog/Helper/Output.php
patch -p2 ./app/code/local/Mage/Catalog/Helper/Output.php < Output.php.search-by-attribute.diff

# 2th solution, extend productAttribute method in ./app/code/local/Mage/Catalog/Helper/Output.php (splited attributes)
public function productAttributeWithSearch($product, $attributeHtml, $attributeName) {
   $attributeHtml = $this->productAttribute($product, $attributeHtml, $attributeName);

   $result = "";
   if ($attributeName != "item") {
      $attribute = split(",", $attributeHtml);
      foreach ($attribute as $a) {
         $result .= "<a>" . $a . "</a> ";
      }
   } else {
      $result = $attributeHtml;
   }
   return $result;
} 

# 3th solutions, rewrite attributes.phtml (attributes.phtml.diff)
--- app/design/frontend/base/default/template/catalog/product/view/attributes.phtml	2010-10-05 17:55:18.000000000 +0200
+++ app/design/frontend/default/default/template/catalog/product/view/attributes.phtml	2010-10-05 17:58:45.000000000 +0200
@@ -44,7 +44,11 @@
         <?php foreach ($_additional as $_data): ?>

                 <?php echo $this->htmlEscape($this->__($_data['label'])) ?>
-                <?php echo $_helper->productAttribute($_product, $_data['value'], $_data['code']) ?>
+                
+                    <a>">
+                        <?php echo $_helper->productAttribute($_product, $_data['value'], $_data['code']) ?>
+                    </a>
+                

         <?php endforeach; ?>