How to remove default magento header from my custom tab - Adminhtml

Question

I have created two tabs on my own module.

when i try to add content it shows with header, i want to remove this header.

hope anyone suggest some ideas

here i have attached screenshot.

in my Tabs.php i have this function

  protected function _beforeToHtml() {

    $this->addTab('update_bulkpriceupdate', array(
        'label'     => Mage::helper('bulkpriceupdate')->__('Bulk Price Update'),
        'title'     => Mage::helper('bulkpriceupdate')->__('Bulk Price Update'),
        'content'   => $this->getLayout()->createBlock('bulkpriceupdate/adminhtml_form')->toHtml(),
        'active'    => true
    ));

    $this->addTab('select_bulkupdateprice', array(
        'label'     => Mage::helper('bulkpriceupdate')->__('Select Products to Update Price'),
        'title'     => Mage::helper('bulkpriceupdate')->__('Select Products to Update Price'),
        //'content'   => $this->getLayout()->createBlock('bulkpriceupdate/adminhtml_select_grid')->toHtml(),
        'url'       => $this->getUrl('bulkpriceupdate/adminhtml_select/index', array('_current' => true)),
        'class'     => 'ajax'
    ));    

    return parent::_beforeToHtml();
}

Updated Question : i am trying to create a tab with grid. when click this tab it continues loading with ajax loader an also displaying header like attached screenshot.

anyone already fixed the issue like this.,please suggest me why this header displaying.

Answer 1

Add below code in your layout file

<reference name="root">
    <remove name="header"/>
</reference>

After this save your changes. clear cache and check this.