Jquery silent error in drupal 7
You should wrap your functionality in a Drupal Behavior. This will make it work even if elements on the page change via ajax and whatnot.

So the following:

(function($) {
  Drupal.behaviors.myCustomModule = {
    attach: function() {
      //var msg = $().jquery;
      //console.log(msg);
      $('div.quicklink-row').hover(function() {
        $(this).addClass('blue-link');
      }, function() {
        $(this).removeClass('blue-link');
      });
    }
  };
})(jQuery);​


But aside from that.... why are you using Javascript for something that can be done so simply with CSS?

div.quicklink-row:hover {
  background: #00F;
}