title: Equivalent to navigateURL in JavaScript
body: <p>I am currently redesigning an application which is written in ActionScript 3 in JavaScript. In the original ActionScript application, there is the use of the command navigateToURL to open a PHP script in the frame underneath the ActionScript application. Eg:</p>
  
  <pre><code>phpRequest.url = obj.action + ".php?param1=" + var1 + "&amp;param2=" + var2 + "&amp;param3=" + var3;
  navigateToURL(phpRequest, "bottom");
  </code></pre>
  
  <p>Is there an equivalent function in JavaScript to open a PHP script underneath the current frame? Thank you.</p>