Twitter Bootstrap Popovers not working for Dynamically Generated Content

You need to call $("[rel=popover]").popover({placement:'left'}); AFTER the elements are in the DOM.

UPDATE

If you are using jQuery

$(element_selector)
  // load results into HTML of element_selector
  .load('your/php/file')
  // when done, initialize popovers
  .done(function(){
    $("[rel=popover]").popover({placement:'left'});
  });

OR a catch all for jQuery ajax requests

$.ajaxComplete(function(){
    $("[rel=popover]").popover({placement:'left'});
  });