title: Is AJAX for inter portlet communication possible?
body: <p>I know that you can create portlets that can refresh its content without refreshing the whole portal page by simply using the JSR286 resourceURL tag and doing an AJAX call.</p>
  
  <p>My question is, is it possible to do an AJAX call in Portlet A and somehow target and dynamically update Portlet B instead?  </p>
  
  <p>The idea is to avoid the who portal page refresh (re-rendering) when you do inter-portlet communication via actionURL or events.</p>