Themes: Aardvark
theme_aardvark
The original menubar based theme for Moodle rewritten for Moodle 2.5+ to draw its base from Bootstrap.
Maintained by: 
Shaun Daubney
The original menubar based theme for Moodle rewritten for Moodle 2.5+ to draw its base from Bootstrap.
The theme features customised icons and a profile section in the menubar ported from the previous version but with a more modern interface that adapts to different devices.
Two other new features added to this latest version are General Alert and Snow Alert. Allowing easy implementation of alerts to users for events such as Student Council Meetings, Charity Events or Snow Closures.
Inspiration taken from the Essential theme by Julian Ridden for the block icons.
** Github not currently being updated **
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This function will replicate the isloggedin thing...
<?php if (!isloggedin()){}
else if ($hascustommenu) {
echo $custommenu;
} ?>
It basically says "If the person is not logged in, display nothing, else display the custom menu (if activated)".
To display the menu no matter what...
<?php echo $custommenu;
?>
...will do the job.
BTW, sorry for any multiple comment submissions. Apparently it sometimes takes up to 30 seconds to submit a comment and there is no indication the comment is submitted when you click the link.
The discrepant layout between browsers is at chem.jon.hk.
Jon