View difference between Paste ID: YJr14qR9 and nRkkDQSi

 // ==UserScript==
 // @name          YouTube HD Lite (HanFox fix)
 // @namespace     http://userscripts.org/users/78916
 // @description   Automatically plays the best quality YouTube video format and removes ads, plus several optional features
 // @include       http://www.youtube.com/watch*
 // @version       2012-01-26
 // ==/UserScript==
 
 // Optional Features
 var use1080p = true,
     use720p = true,
     wideVideo = true,
     hideAnnotations = false,
     scrollToVideo = true,
     autoPlay = true,
     hideControls = true;
 
 
 // for console debug messages
 var debug = false;
 
 
 // ensure proper Youtube URL
 if ( location.href.search( "watch#!" ) != -1 ) {
     var url = location.href.split( "watch#!" );
     url = url[0] + "watch?" + url[1];
     window.open( url, "_self" );
 }
 
 
 if ( scrollToVideo ) {
     document.getElementById( "watch-headline-title" ).scrollIntoView( true );
 }
 
 if ( wideVideo ) {
     // sidebar must be moved down
     var A = document.getElementById( "content" );
     if ( A.className.indexOf( "watch-wide" ) == -1 ) {
         A.className += " watch-wide";
     }
     // video
     A = document.getElementById( "watch-video" );
     if ( A.className.indexOf( "wide" ) == -1 ) {
         A.className += " wide";
     }
 }
 
 
 var player = document.getElementById( "movie_player" ),
     myPlayer = player.cloneNode( true ),
     //config = unsafeWindow.yt.getConfig( "PLAYER_CONFIG" ),
     flashvars = myPlayer.getAttribute( "flashvars" );
 
 if ( debug ) GM_log( "flashvars unmodified: " + flashvars );
 
 
 function setFlashvar( field, newVal )
 {
     var delimited = "&" + field;
     if ( flashvars.indexOf( delimited ) == -1 ) {
         // field not found, so append it
         flashvars += delimited + "=" + newVal;
     }
     else {
         // modify existing field
         var tmp = flashvars.split( delimited );
         var tmp2 = tmp[1].indexOf( "&" );
         if ( tmp2 != -1 ) {
             flashvars = tmp[0] + delimited + "=" + newVal + tmp[1].substr( tmp2 );
         }
         else {
             flashvars = tmp[0] + delimited + "=" + newVal;
         }
     }
 }
 
 
 /**********************************************
 //     2010.12.22 list of video formats
 // fmt=5    240p          vq=small     flv
 // fmt=18   240p or 360p  vq=medium    mp4
 // fmt=34   240p or 360p  vq=medium    flv
 // fmt=35   480p          vq=large     flv
 // fmt=22   720p          vq=hd720     mp4
 // fmt=37  1080p          vq=hd1080    mp4
 ***********************************************/
 
-var split = flashvars.split("&");
+
 var end = flashvars.indexOf("&", start);
 var len = end - start;
 var fmt_list = flashvars.substr(start, len);
 
 if ( debug ) GM_log( " fmt_list: " + fmt_list );
 
 // now must set the "vq" var so that the proper format is loaded
 //if ( use1080p && ( fmt_list.search( /37(\/[^,]+){4}/ ) != -1 )) {
 if ( use1080p && ( fmt_list.search("37%2F") != -1 )) {
-if ( use720p && ( fmt_list.search("37%2F") != -1 )) {
+
 }
 //else if ( use720p && ( fmt_list.search( /22(\/[^,]+){4}/ ) != -1 )) {
 else if ( use720p && ( fmt_list.search("22%2F") != -1 )) {
     setFlashvar( "vq", "hd720" );
 }
 //else if ( fmt_list.search( /35(\/[^,]+){4}/ ) != -1 ) {
 else if ( fmt_list.search("35%2F") != -1 ) {
-else if ( use720p && ( fmt_list.search("35%2F") != -1 )) {
+
 }
 else {
     setFlashvar( "vq", "medium" );
 }
 
 
 setFlashvar( "enablejsapi", "1" );
 
 if ( autoPlay ) {
     setFlashvar( "autoplay", "1" );
 }
 else {
     setFlashvar( "autoplay", "0" );
 }
 
 setFlashvar( "watermark", "" );
 
 setFlashvar( "invideo", "false" );
 
 if ( hideAnnotations ) {
     setFlashvar( "iv_load_policy", "3" );
 }
 
 if ( hideControls ) {
     setFlashvar( "autohide", "1" );
 }
 else {
     setFlashvar( "autohide", "0" );
 }
 
 if ( debug ) GM_log( "flashvars final: " + flashvars );
 
 myPlayer.setAttribute( "flashvars", flashvars );
 
 
 player.parentNode.replaceChild( myPlayer, player );