Extend for usage in templates
In case anyone is trying to use this as part of a template, you just have to add
// recursive parse in case we are inside a template
if($wgVersion >='1.16') {
foreach($args as &$arg) {
$arg = $parser->recursiveTagParse( $arg, $frame );
}
}
just above
... // retrieve URL of image file substituting GeoGebra applet if Java ist not installed ...
