The following code shows how to put text block in drop down.
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src='http://code.jquery.com/jquery-1.9.1.js'></script>
<link rel="stylesheet" type="text/css"
href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css">
<script type='text/javascript'
src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script>
<style type='text/css'>
.dropdown-menu {<!-- w ww. ja v a2s .c om-->
width: 300px;
white-space: normal;
}
</style>
</head>
<body style='margin:30px'>
<div class="btn-group">
<a class="btn dropdown-toggle btn-mini" data-toggle="dropdown"
href="#"> Action <span class="caret"></span>
</a>
<div class="dropdown-menu">
<div>Long text goes here.Long text goes here.Long text goes
here.Long text goes here.Long text goes here.Long text goes here.</div>
</div>
</div>
</body>
</html>