var pageURL = window.location.href + "";    // adding "" converts the value to a string

  if( pageURL.indexOf( "?URL=" ) != -1 )
  {

    playNowURL = pageURL.substring(pageURL.indexOf("?URL=") + 5, pageURL.length);

    document.write ( '<IFRAME SRC="' + playNowURL + '" SCROLLING="AUTO" FRAMEBORDER="0" NAME="FFUNARCADE" WIDTH="590" HEIGHT="600">' );
    document.write ( '  Sorry, your browser doesn\'t support iframes. Please use <A HREf="http://www.microsoft.com/ie" target="_blank">Microsoft\'s Internet Explorer</A> or an iFrames compatible browser. Thank you.' );
    document.write ( '</IFRAME>' );
  }
  else
  {

   // platform check
      var OS_OK = false,
          browserOK = false;

      if( navigator.platform.indexOf( "Win" ) != -1 ) OS_OK = true;
      if( navigator.userAgent.indexOf( "MSIE" ) != -1 || navigator.userAgent.indexOf( "Firefox" ) != -1 ) browserOK = true;

      if( OS_OK )
      {
        if( browserOK ) { loadGameData(); }
        else { document.write( '<br><h2>Browser not supported.<br><br>Please use <a href="http://www.mozilla.com/" target="_blank">Mozilla Firefox</a> or <a href="http://www.microsoft.com/ie" target="_blank">Internet Explorer</a>.</h2>' ); }
      }
      else { document.write( '<br><h2>System not supported.<br><br>Please visit <a href="http://www.realarcade.com/" target="_blank">Real Arcade</a> for more information.</h2>' ); }
  }