Loads Firebug Lite (if necessary) and jQuery (if necessary)

FB+JS.js

(function(){
  if (typeof window.console === 'undefined'){
    //Load Firebug Lite
    var firebug_Script = document.createElement('script');
    firebug_Script.setAttribute('src','https://getfirebug.com/firebug-lite.js#startOpened');
    document.body.appendChild(firebug_Script);
    var tI = setInterval(function(){
      if(typeof window.console !== 'undefined'){
        console.info('Firebug Lite attached.');
        clearInterval(tI);
        add_jQuery();
      }
    },100);
  }else{
    add_jQuery();
  }

  function add_jQuery(opts){
    var _script=document.getElementsByTagName('SCRIPT');
    if ((typeof opts!='undefined'&&opts.jQOverride!==true)||typeof jQuery=='undefined'){
      for (var i = 0;i<_script.length;i++){
        if (/jquery\.(min\.)?js/.test(_script[i].src))
          console.warn('jQuery appears broken (check %s)',/[^/]+$/i.exec(_script[i].src));
      }
    }
    
    if (typeof jQuery=='undefined'){
      console.log('Attempting to load jQuery ...');
      var jQuery_Script = document.createElement('script');
      jQuery_Script.setAttribute('src','http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js');
      document.body.appendChild(jQuery_Script);
      var tI = setInterval(function(){
        if(typeof jQuery!=='undefined'){
          console.info('jQuery (%o) attached.',jQuery);
          clearInterval(tI);
        }else{
          console.log('Waiting 100ms..');
        }
      },100);
    }else{
      console.info('jQuery (%o) already loaded.',jQuery);
    }
  } 
})();