How insert a JavaScript on page

  • Hi

    How can I insert a JavaScript on new page. I need to insert this script


    <!--OST Widget code start--><iframe src="https://openspeedtest.com/Get-widget.php" width="735" scrolling="no" height="490" frameborder="0">

    </iframe><br /><div style="text-align:center; width: 725px;"><a href="http://openspeedtest.com?ref=widget">Powered by openspeedtest.com</a></div><!-- OST Widget code end -->