<script type="text/javascript">
  $(document).ready(function() {
  
    // Ajusts on Window Resize 
    $(window).bind('resize', alignWindow);
  });

  function alignWindow() {  

    let screenWidth = $('#frame').width() - 10,
	    colRightWidth = 450;
    
    $('#panel-left').css('width', `${screenWidth - colRightWidth}px`);
    $('#panel-right').css('width', `${colRightWidth}px`);
  }	
</script>