Mage::unregister('registry_key')

<?php
$color = array(
    'red' => '3',
    'white' => '5',
    'blue' => '3',
    'black' => '10');

while ($color_value = current($color)) {
    
        echo key($color).'<br />';
   
    next($color);
}
?>

eavConfig = Mage::getSingleton('eav/config');
$attribute = $eavConfig->getAttribute('customer', 'your_new_attribute');
$attribute->setData('used_in_forms',   array('customer_account_edit',
                                             'customer_account_create',
                                             'adminhtml_customer'));
$attribute->save();

To make the new customer address attributes saveable in frontend (register and edit) and display admin section execute this

eavConfig = Mage::getSingleton('eav/config');
$attribute = $eavConfig->getAttribute('customer_address', 'your_new_attribute');
$attribute->setData('used_in_forms',   array('customer_register_address',
                                             'ccustomer_address_edit',
                                             'adminhtml_customer_addres'));
$attribute->save();

showContent: function(a) {
    var li = $(a.parentNode), ul = $(li.parentNode);
    ul.select('li', 'ol').each(function(el){
      var contents = $(el.id+'_contents');
      if (el==li) {
        el.addClassName('active');
        contents.show();
      } else {
        el.removeClassName('active');
        contents.hide();
      }
    });
  } 

showContent: function(a) {
    var li = $(a.parentNode), ul = $(li.parentNode);
    ul.select('li').each(function(el){
      var contents = $(el.id+'_contents');
      if (el==li) {
        el.addClassName('active');
        contents.show();
      } else {
        el.removeClassName('active');
        contents.hide();
      }
    });
  } 

at frontend\default\default\template\easytabs\tabs.phtml

uniq();	 to invoke("toJSON").uniq().invoke("evalJSON");

// - array("from"=>$fromValue, "to"=>$toValue)
// - array("like"=>$likeValue)
// - array("neq"=>$notEqualValue)
// - array("in"=>array($inValues))
// - array("nin"=>array($notInValues))
// - array("eq"=>$equal)
// - array("nlike"=>$notlike )
// - array("is"=>$is )
// - array("gt"=>$greaterthan )
// - array("lt"=>$lessthan )
// - array("gteq"=>$greterthanequal )
// - array("lteq"=>$lessthanequal )
// - array("finset"=>$unknown ) 

<reference name="content">
<block type="catalog/product_list" name="home" template="catalog/product/list.phtml">
<action method="setCategoryId"><category_id>your_category_id</category_id></action>
<block type="catalog/product_list_toolbar" name="product_list_toolbar" template="catalog/product/list/toolbar.phtml">
<block type="page/html_pager" name="product_list_toolbar_pager"/>
</block>
<action method="setToolbarBlockName"><name>product_list_toolbar</name></action>
</block>
</reference>

You can easily design order success page. Just comment out some code in successAction (/app/code/core/Mage/Checkout/controllers/OnepageController.php).
Change this code

    public function successAction()
    {
        $session = $this->getOnepage()->getCheckout();
        if (!$session->getLastSuccessQuoteId()) {
            $this->_redirect('checkout/cart');
            return;
        }

        $lastQuoteId = $session->getLastQuoteId();
        $lastOrderId = $session->getLastOrderId();
        $lastRecurringProfiles = $session->getLastRecurringProfileIds();
        if (!$lastQuoteId || (!$lastOrderId && empty($lastRecurringProfiles))) {
            $this->_redirect('checkout/cart');
            return;
        }

        $session->clear();
        $this->loadLayout();
        $this->_initLayoutMessages('checkout/session');
        Mage::dispatchEvent('checkout_onepage_controller_success_action', array('order_ids' => array($lastOrderId)));
        $this->renderLayout();
    }

to

    public function successAction()
    {
        /*$session = $this->getOnepage()->getCheckout();
        if (!$session->getLastSuccessQuoteId()) {
            $this->_redirect('checkout/cart');
            return;
        }

        $lastQuoteId = $session->getLastQuoteId();
        $lastOrderId = $session->getLastOrderId();
        $lastRecurringProfiles = $session->getLastRecurringProfileIds();
        if (!$lastQuoteId || (!$lastOrderId && empty($lastRecurringProfiles))) {
            $this->_redirect('checkout/cart');
            return;
        }

        $session->clear();*/

        $this->loadLayout();
        $this->_initLayoutMessages('checkout/session');
        Mage::dispatchEvent('checkout_onepage_controller_success_action', array('order_ids' => array($lastOrderId)));
        $this->renderLayout();
    }

Mage::getModel('core/variable')->loadByCode('your_variable_code')->getValue('text') ;

UPDATE `core_store` SET `store_id` = 0 WHERE `code` like 'admin';
UPDATE `core_website` SET `website_id` = 0 WHERE `code` like 'admin';
UPDATE `customer_group` SET `customer_group_id` = 0 WHERE `customer_group_code` like 'NOT LOGGED IN'; 

Just execute this query to your database.