title: window.open(url, '_blank'); not working on iMac/Safari
body: <p>I've build a web page that let's you select a page name from a drop down list and then transfers the browser to that page.  The code that does the transfer is</p>
  
  <pre><code>if (url){
      window.open(url, '_blank');
  } 
  </code></pre>
  
  <p>where "url" is the page selected.</p>
  
  <p>A console log just before the window.open line prints something like:</p>
  
  <pre><code>    executing: window.open(http://www.mywebsite.com/44/threats.html, '_blank')
  </code></pre>
  
  <p>and then the browsers opens the page in a new tab.</p>
  
  <p>This works fine on Windows 7 for all the browsers, including Safari.  </p>
  
  <p>On an iMac it works for Firefox but not for Safari. </p>
  
  <p>Does anyone know why iMac/Safari won't do  this?</p>