Twitter Bootstrap: Hide other popovers when one is open

The following Bootstrap code gives me "sticky" popover (so users can interact with the content inside the popover). The issue is that when a popover is opened, other popovers should be closed (hidden). Any idea how I can implement this?

$("[rel=popover]").popover({placement:'bottom', trigger:'manual'}).hover(function(){
    $(this).popover('show');
    e.preventDefault(); 
});