Index: moodle/mod/lamslesson/settings.php
===================================================================
RCS file: /usr/local/cvsroot/moodle/mod/lamslesson/settings.php,v
diff -u -r1.2 -r1.3
--- moodle/mod/lamslesson/settings.php	9 Jan 2012 16:15:02 -0000	1.2
+++ moodle/mod/lamslesson/settings.php	21 Jan 2013 07:23:58 -0000	1.3
@@ -51,7 +51,7 @@
     $html = html_writer::script('', $CFG->wwwroot.'/mod/lamslesson/validate.js');
     $html .=  html_writer::tag('p', get_string('validationinfo', 'lamslesson')); 
     $html .=  html_writer::start_tag('div', array('style' => 'text-align:center;padding-top: 15px; padding-bottom:5px;'));
-    $html .=  html_writer::start_tag('span', array('id' => 'validatebutton', 'class' => 'yui-button yui-link-button'));
+    $html .=  html_writer::start_tag('span', array('id' => 'validatebutton', 'class' => 'yui3-button yui3-link-button'));
     $html .=  html_writer::tag('a', get_string('validationbutton', 'lamslesson'), 
 		array('id' => 'validatebtn', 
 			'name' => 'validatebtn',