how To add Custom Tab in admin Cetalog Product programmatically

We  want to add New Tab "Manage Weight" to manage My custom Code

1)Create a module "example NameSpace: Jewelry and Module Name: Basicprice "

2) Do Change in Module

                i)  in config.xml

                                <global>

                                                <blocks>

                                                                 <basicprice>

                                                                                <class>Jewelry_Basicprice_Block</class>

                                                                  </basicprice>                                                  

                                                </blocks>

                                </global>

replace  this code to overwrite product TAB

Code is:

<global>

<blocks> <basicprice><class>Jewelry_Basicprice_Block</class>  </basicprice>  

<adminhtml> <rewrite>                                                                                                   <catalog_product_edit_tabs>Jewelry_Basicprice_Block_Adminhtml_Tabs</catalog_product_edit_tabs></rewrite></adminhtml></blocks>

</global>

ii) Make a file "Tabs.php" in location app/code/local/Company/ModuleName/Block/Adminhtml/tabs.php

and past this code

<?php

class Jewelry_Basicprice_Block_Adminhtml_Tabs extends Mage_Adminhtml_Block_Catalog_Product_Edit_Tabs

{    public $parent;

    protected function _prepareLayout()    {

        //get all existing tabs

        $this->parent = parent::_prepareLayout();

        //add new tab

        $this->addTab('tabid', array(

            'label'     => Mage::helper('catalog')->__(' Manage Weight'),

            'content'   => $this->getLayout()->createBlock('basicprice/adminhtml_tabs_tabid')->toHtml(),

        ));

        return $this->parent;

    }

}?>

/public_html/app/code/local/Company/ModuleName/Block/Adminhtml/tabs.php

iii)Make a folder "Tabs" in location  app/code/local/Company/ModuleName/Block/Adminhtml/tabs/

iv) Create a "Tabid.php" file in location app/code/local/Company/ModuleName/Block/Adminhtml/tabs/ Tabid.php

and past this code

<?php

class Jewelry_Basicprice_Block_Adminhtml_Tabs_Tabid extends Mage_Adminhtml_Block_Widget

{    public function __construct()

    {        parent::__construct();

        $this->setTemplate('weight.phtml');

    }

}

?>

v) create a file weight.phtml in location  "app/design/adminhtml/default/default/template/ weight.phtml "

to manage Your custom code

Example:

Make custom url in Magento Modul in Admin

<?php
My actual Url is
"http://localhost/magento/index.php/admin_metal/adminhtml_metalbackend/index/key/f64c498b4c19e35795ce97188cd3c3ee/";

we create Url by Pragmatically :
echo Mage::helper("adminhtml")->getUrl("metal/adminhtml_metalbackend");

?>

Remove Or Rename “Add New ” Button From Admin Grid In Magento Module

Example: "Jewelry" is my  Namespace and  "Basicprice" is my Module

Rename ‘Add New’ Button:

Step 1 : Go to app\code\local\Jewelry\Basicprice\Block\Adminhtml\Basicprice.php

There is a code 
public function __construct()
{

$this->_controller = "adminhtml_basicprice";
$this->_blockGroup = "basicprice";
$this->_headerText = Mage::helper("basicprice")->__("Basicprice Manager");
$this->_addButtonLabel = Mage::helper("basicprice")->__("Add New Item");
parent::__construct();


}


Step 2 : replace  $this->_addButtonLabel = Mage::helper("basicprice")->__("Add New Item");  to $this->_addButtonLabel = Mage::helper("basicprice")->__("Your Custom Name");

Here are the steps to remove the “Add New” button

Step 1 :  Go to app\code\local\Jewelry\Basicprice\Block\Adminhtml\Basicprice.php
and add  this code "$this->_removeButton('add'); " in below parent::__construct(); function

Example:
public function __construct()
{

$this->_controller = "adminhtml_basicprice";
$this->_blockGroup = "basicprice";
$this->_headerText = Mage::helper("basicprice")->__("Basicprice Manager");
$this->_addButtonLabel = Mage::helper("basicprice")->__("Add New Item");
parent::__construct();
$this->_removeButton('add');

}