<link rel="stylesheet" href="http://twitter.github.com/bootstrap/assets/css/bootstrap.css">
<pre>This is a contrived example, but it represents the behavior I was seeing when there are competing z-indexed dom elements and .modal is not a sibling of .modal-backdrop.</pre >
<div class="well z z-1">
<p>This content has a z-index of -1</p>
</div>
<div class="well z z3">
<p>This content, including the modal button, is in a div with z-index of 3.</p>
<!-- sample modal content -->
<div id="myModal" class="modal hide fade">
<div class="modal-header">
<button class="close" data-dismiss="modal">×</button>
<h3>Modal Heading</h3>
</div>
<div class="modal-body">
<h4>Text in a modal</h4>
<p>Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem.</p>
<h4>Popover in a modal</h4>
<p>This <a href="#" class="btn popover-test" title="A Title" data-content="And here's some amazing content. It's very engaging. right?">button</a> should trigger a popover on hover.</p>
<h4>Tooltips in a modal</h4>
<p><a href="#" class="tooltip-test" title="Tooltip">This link</a> and <a href="#" class="tooltip-test" title="Tooltip">that link</a> should have tooltips on hover.</p>
</div>
<div class="modal-footer">
<a href="#" class="btn" data-dismiss="modal" >Close</a>
<a href="#" class="btn btn-primary">Save changes</a>
</div>
</div>
<a data-toggle="modal" href="#myModal" class="btn btn-primary btn-large modal-btn">Launch BUSTED modal</a>
</div>
<div class="well z z3">
<p>This content, including the modal button, is in a div with z-index of 3.</p>
<div class="fixedVersion">
<!-- sample modal content -->
<div id="myModal2" class="modal hide fade">
<div class="modal-header">
...