<div data-role="fieldcontain"> <label for="txtarea>"ラベル:</label> <textarea id="txtarea" name="txtarea"></textarea> </div>
<div data-role="fieldcontain" class="ui-hide-label"> <label for="txtarea>"ラベル:</label> <textarea id="txtarea" name="txtarea"></textarea> </div>
<div data-role="fieldcontain" class="ui-hide-label"> <label for="txtarea>"ラベル:</label> <textarea id="txtarea" name="txtarea" style="width:80px;"></textarea> </div>