<link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script> <script src="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> <div class="navbar"> <div class="navbar-inner"> <div class="container"> <div class="dropdown"> <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse"> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </a> <a class="brand" href="#">WebApp</a> <div class="nav-collapse"> <ul class="nav"> <li class="active"><a href="#">Home</a></li> <li class="dropup"> <a href="#" class="dropdown-toggle" data-toggle="dropup">Dropup <b class="caret"></b></a> <ul class="dropup-menu"> <li><a href="#">Action</a></li> <li><a href="#">Another action</a></li> <li><a href="#">Something else here</a></li> <li class="divider"></li> <li class="nav-header">Nav header</li> <li><a href="#">Separated link</a></li> <li><a href="#">One more separated link</a></li> </ul> </li> <li class="dropup"> <a href="#" class="dropup-toggle" data-toggle="dropup">Dropup <b class="caret"></b></a> <ul class="dropup-menu"> <li><a href="#">Action</a></li> <li><a href="#">Another action</a></li> <li><a href="#">Something else here</a></li> <li class="divider"></li> <li class="nav-header">Nav header</li> <li><a href="#">Separated link</a></li> <li><a href="#">One more separated link</a></li> </ul> </li> </ul> <ul class="nav pull-right"> <li class="divider-vertical"></li> <li class="dropup"> <a href="#" class="dropup-toggle" data-toggle="dropup">Dropup <b class="caret"></b></a> <ul class="dropup-menu"> <li><a href="#">Action</a></li> <li><a href="#">Another action</a></li> <li><a href="#">Something else here</a></li> <li class="divider"></li> <li><a href="#">Separated link</a></li> </ul> </li> </ul> </div><!-- /.nav-collapse --> </div> </div><!-- /navbar-inner --> . </div>

$('.dropdown-submenu').hover( function(){ //hover in $('.dropdown-submenu > ul').css('top', '-' + $('.dropdown-submenu > ul').css('height')); }, //hover out function(){ } );