How to add class to menu tabs or hide menu tabs in drupal

    Put this function in template.php of your theme file of drupal
    <?php

    function <themename>_menu_local_task($link, $active = FALSE) {
     
    $testlink = trim(strip_tags($link));
        if (
    $testlink == 'Find Experts') {
        return
    '<li style="display:none;">'. $link ."</li>\n";
        }
        else {
        return
    '<li '. ($active ? 'class="active" ' : '') .'>'. $link ."</li>\n";
        }
    }

    ?>
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