title: Open link in new window or focus to it if already open
body: <p>I have a link which should open in a new tab, but if the tab is already open, just switch to it. 
  I've tried with javascript, wnd = window.open() and than wnd.focus(), that works in Chrome 19, but not in FF 13  or IE 9. 
  Here's the code I've written :</p>
  
  <pre><code>&lt;script type="text/javascript"&gt;
  var loadingTableWnd;
  function openOrSwitchToWindow(url){
  if(loadingTableWnd == undefined)
  loadingTableWnd = window.open(url,'myFrame');
  else
  loadingTableWnd.focus();
  }
  &lt;/script&gt; 
  &lt;a href='javascript:openOrSwitchToWindow("/");' &gt;Loading Table&lt;/a&gt;
  </code></pre>
  
  <p>Any idea how can I open or switch to from every browser?</p>
  
  <p><strong>EDIT</strong>: I need to open the link in a new tab, not a stand-alone window.</p>