HTML

<div class="container">
<div class="row">
    <div class="span9" id="content" style="background-color:blue;">
<div class="navbar visible-phone">
<div class="container">
      <a class="btn btn-navbar" id="showsidebar">
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </a>
</div>
</div>      
        <p>Main column</p>
        <p>Content...</p>
    </div>
    <div class="span3 hidden-phone" id="sidebar" style="background-color:darkgreen;">

<div class="navbar visible-phone">
<div class="container">
      <a class="btn btn-navbar" id="showcontent">
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </a>
</div> 
</div>      
        Sidebar
        </div>
</div>  
</div>

JavaScript的

$('#showsidebar').click(function(){
    $('#sidebar').removeClass('hidden-phone');
    $('#content').addClass('hidden-phone');

    }
);
$('#showcontent').click(function(){
    $('#sidebar').addClass('hidden-phone');
    $('#content').removeClass('hidden-phone');

    }
);