test

test.php

$dateFormatIso = Mage::app()->getLocale()->getDateFormat(Mage_Core_Model_Locale::FORMAT_TYPE_SHORT);

        $fieldset->addField('from_date', 'date', array(
            'name'   => 'from_date',
            'label'  => Mage::helper('qbanner')->__('From Date'),
            'title'  => Mage::helper('qbanner')->__('From Date'),
            'image'  => $this->getSkinUrl('images/grid-cal.gif'),
            'input_format' => Varien_Date::DATE_INTERNAL_FORMAT,
            'format'       => $dateFormatIso,
        ));
        $fieldset->addField('to_date', 'date', array(
            'name'   => 'to_date',
            'label'  => Mage::helper('qbanner')->__('To Date'),
            'title'  => Mage::helper('qbanner')->__('To Date'),
            'image'  => $this->getSkinUrl('images/grid-cal.gif'),
            'input_format' => Varien_Date::DATE_INTERNAL_FORMAT,
            'format'       => $dateFormatIso,
        ));