header php заменить php wp_head на script type text javascript src php

header.php заменить:
<?php wp_head(); ?>
на:
<script type="text/javascript" src="<?php bloginfo('template_directory'); ?>/jquery-1.2.6.min.js"></script>
<script type="text/javascript">
    function toogle_alf(){
        $("#alf").slideToggle();
    }
</script>
<?php wp_head(); ?>

style.css добавит в конец:
#alf {
    display:none;
}

#alf .menu {
    padding-left:15px;
}

sidebar.php:
  <tr>

    <td><table width="100%" border="0" cellspacing="0" cellpadding="0">

      <tr>

        <td width="215" height="271" align="left" valign="top" background="<?php bloginfo('template_directory'); ?>/img/fon_left.jpg"><table width="215" border="0" cellspacing="0" cellpadding="0">
        <tr>
            <td width="42"></td>
            <td>
                <?php include (TEMPLATEPATH . '/searchform_bar.php'); ?>
            </td>
            <td width="17">&nbsp;</td>
        </tr>
        <?php
        $cats = get_categories();
        $alfavit_parent = 5; // parent category
        $flag = 0;
        foreach ((array)$cats as $cat) {
            if (($flag == 1) and ($cat->parent != $alfavit_parent)){
                $flag = 0;
                echo '</table></td></tr>';
            }
            echo '<tr>

                    <td width="42"></td>

                    <td width="156" class="menu">
                        <a href="' . get_category_link($cat->cat_ID) . '"';
                        if ($cat->cat_ID == $alfavit_parent) echo ' onclick="toogle_alf(); return false;"';
            echo    '>' . $cat->cat_name . '</a>

                    </td>
                    <td width="17">&nbsp;</td>

                  </tr>
                  <tr>

                    <td colspan="3"><img src="';
                    bloginfo('template_directory');
            echo '/img/menu_razd.jpg" width="215" height="3" border="0" /></td>

                  </tr>';
            if ($cat->cat_ID == $alfavit_parent){
                echo '<tr><td colspan="3"><table id="alf" width="215" border="0" cellspacing="0" cellpadding="0" >';
                $flag = 1;
            }
        }
        if ($flag == 1){
            $flag = 0;
            echo '</table></td></tr>';
        }
        ?>
            

        </table></td>