title: Create a Popover in safari extension after click contextual menu
body: <p>Hi There Best Collegue,</p>
  
  <p>Currently im creating a safari bookmarker and run to the following problem. I've create a Contextual menu Item and want to behave as follow:</p>
  
  <p>If the user right click on a link in a page and clicks to this contextual item it should get the href attribute of this link and open a popover within there a iframe. </p>
  
  <p>How can i solve this issue? </p>
  
  <p>Right now i already get the href attribute but how can i open a popover?</p>
  
  <p>my endscript: default.js</p>
  
  <pre><code>document.addEventListener("contextmenu", handleContextMenu, false);
  
  function handleContextMenu(event){  
      if(event.target.nodeName === "A"){
          var url = event.target.href;
          safari.self.tab.setContextMenuEventUserInfo(event, url);
      }
  }
  </code></pre>
  
  <p>my global.html </p>
  
  <pre><code>safari.application.addEventListener("command", performCommand, false);
  
  function performCommand(event) {
  if (event.command !== "DoAddSymbaloo")
          return;
  
          var u = event.userInfo;
  
  }
  </code></pre>
  
  <p>How can i fix this? Tnx in advance.</p>