how to stay on the same page on clicking a link I need to know how to stay on the same page when a link is clicked. If l(), what can be passed as the second argument for the link to be for the page currently visualized? 

I need to override l() for menu slot titles inside the megamenus module so that they don't redirect to a different page. Is there any token in Drupal 7 which stores the URL of the current page being displayed?
Try hash # char...

l(t('test'), '#');