code: function queueOrRequest( el ){
  			var url = el.data( "url" );
  			if( o.proxy && $.inArray( url, urllist ) === -1 ){
  				urllist.push( url );
  				elQueue = elQueue.add( el );
  			}
  			else{
  				AI.makeReq( url, el );
  			}
  		}
docs: if it's a proxy, queue the element and its url, if not, request immediately