Hello!
i used:
<?php echo CHtml::htmlButton('Save', array(type=>'submit', 'class'=>'ui-button ui-state-default ui-corner-all')); ?>
and got:
<button class="ui-button ui-state-default ui-corner-all" name="yt0" type="submit" value="Save"/>
instead of:
<button class="ui-button ui-state-default ui-corner-all" name="yt0" type="submit">Save</button>