title: Change Liferay Portlet Title in javascript
body: <p>Does it possible to change liferay portlet title using javascript?
  For example I have a couple of divs, one of them is shown, other are hidden. I press the button and different div is going to be shown. Portlet title must be name of that div.</p>
  
  <p>There is portletTitleEdit function in util.js, but seems it's not the function I need, because it tries to save the portletTitle via ajax. I need just to substitute the title.</p>