thanks for that, but cant find that file.
below is at includes/templates/applezen/sideboxes/tpl_search_header.php
<?php
/**
* Side Box Template
*
* @package templateSystem
* @copyright Copyright 2003-2006 Zen Cart Development Team
* @copyright Portions Copyright 2003 osCommerce
* @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
* @version $Id: tpl_search_header.php 4142 2006-08-15 04:32:54Z drbyte $
*/
$content = "";
$content .= zen_draw_form('quick_find_header', zen_href_link(FILENAME_ADVANCED_SEARCH_RESULT, '', 'NONSSL', false), 'get');
$content .= zen_draw_hidden_field('main_page',FILENAME_ADVANCED_SEARCH_RESULT);
$content .= zen_draw_hidden_field('search_in_description', '1') . zen_hide_session_id();

if (strtolower(IMAGE_USE_CSS_BUTTONS) == 'yes') {
$content .= zen_draw_input_field('keyword', '', 'size="6" maxlength="30" class="topSearch" style="width: 16%" value="' . HEADER_SEARCH_DEFAULT_TEXT . '" onfocus="if (this.value == \'' . HEADER_SEARCH_DEFAULT_TEXT . '\') this.value = \'\';" onblur="if (this.value == \'\') this.value = \'' . HEADER_SEARCH_DEFAULT_TEXT . '\';"') . '&nbsp;' . zen_image_submit (BUTTON_IMAGE_SEARCH,HEADER_SEARCH_BUTTON);
} else {
$content .= zen_draw_input_field('keyword', '', 'size="6" maxlength="30" class="topSearch" style="width: 16%" value="' . HEADER_SEARCH_DEFAULT_TEXT . '" onfocus="if (this.value == \'' . HEADER_SEARCH_DEFAULT_TEXT . '\') this.value = \'\';" onblur="if (this.value == \'\') this.value = \'' . HEADER_SEARCH_DEFAULT_TEXT . '\';"') . '&nbsp;' . zen_image_submit (BUTTON_IMAGE_SEARCH,HEADER_SEARCH_BUTTON);
}

$content .= "</form>";
?>