10+ FREE Magento Extensions For Magento Community Edition 1.7

http://www.jxtgroup.com/top-10-magento-17-extensions-2013_3914633.html

How to get current product all assigned categoires on product page only and Product page side bar

<?php
$currentCatIds = $_product->getCategoryIds();
$categoryCollection = Mage::getResourceModel('catalog/category_collection')
                     ->addAttributeToSelect('name')
                     ->addAttributeToSelect('url')
                     ->addAttributeToFilter('entity_id', $currentCatIds)
                     ->addIsActiveFilter();
?>
<div class="other-category" style="display:none;">
 <span class="text-title">Other areas:</span>
  <ul class="cate-brad">
  <?php $count = sizeof($categoryCollection);
     $i = 1;
   foreach($categoryCollection as $cat){?>
     <li><a href="<?php echo $cat->getUrl(); ?>"><?php echo $cat->getName(); ?></a></li>
     <?php if($count==$i){}else{?>
     <span class="diveder">|</span>
     <?php } $i++; } ?>
  </ul>
</div>
=========================================================================
<?php $_helper = $this->helper('catalog/output'); ?>
<?php $_product = $this->getProduct(); ?>
<?php
$currentCatIds = $_product->getCategoryIds();
$categoryCollection = Mage::getResourceModel('catalog/category_collection')
                     ->addAttributeToSelect('name')
                     ->addAttributeToSelect('url')
                     ->addAttributeToFilter('entity_id', $currentCatIds)
                     ->addIsActiveFilter();
?>
<div class="other-category" style="display:none;">
 <span class="text-title">Other areas:</span>
  <ul class="cate-brad">
  <?php $count = sizeof($categoryCollection);
     $i = 1;
   foreach($categoryCollection as $cat){?>
     <li><a href="<?php echo $cat->getUrl(); ?>"><?php echo $cat->getName(); ?></a></li>
     <?php if($count==$i){}else{?>
     <span class="diveder">|</span>
     <?php } $i++; } ?>
  </ul>
</div>

How to get current product all assigned categoires anywhere

<?php
    if(Mage::registry('current_product')) {

    $_product = Mage::getModel('catalog/product')->load(Mage::registry('current_product')->getId());
    $currentCatIds = $_product->getCategoryIds();
    $categoryCollection = Mage::getResourceModel('catalog/category_collection')
                         ->addAttributeToSelect('name')
                         ->addAttributeToSelect('url')
                         ->addAttributeToFilter('entity_id', $currentCatIds)
                         ->addIsActiveFilter();
    ?>
    <ul class="cate-brad">
  <?php $count = sizeof($categoryCollection);
     $i = 1;
   foreach($categoryCollection as $cat){?>
     <li><a href="<?php echo $cat->getUrl(); ?>"><?php echo $cat->getName(); ?></a></li>
     <?php if($count==$i){}else{?>
     <span class="diveder">|</span>
     <?php } $i++; } ?>
  </ul>

    <?php  }?>

How to find current page is product page in magneto

<?php
if(Mage::registry('current_product')) {
 //do something related to product
}?>