diff --git a/wp-admin/js/plugin-install.js b/wp-admin/js/plugin-install.js
index f32574abdb..26e9982e28 100644
--- a/wp-admin/js/plugin-install.js
+++ b/wp-admin/js/plugin-install.js
@@ -27,7 +27,7 @@ jQuery(document).ready(function($) {
 
 	$(window).resize(function(){ tb_position(); });
 
-	 $('#dashboard_plugins a.thickbox, .plugins a.thickbox').click( function() {
+	$('#dashboard_plugins, .plugins').on( 'click', 'a.thickbox', function() {
 		tb_click.call(this);
 
 		$('#TB_title').css({'background-color':'#222','color':'#cfcfcf'});
diff --git a/wp-includes/js/admin-bar.js b/wp-includes/js/admin-bar.js
index cb4e118491..71b8d5e78a 100644
--- a/wp-includes/js/admin-bar.js
+++ b/wp-includes/js/admin-bar.js
@@ -1,8 +1,9 @@
 // use jQuery and hoverIntent if loaded
 if ( typeof(jQuery) != 'undefined' ) {
-	if ( typeof(jQuery.fn.hoverIntent) == 'undefined' )
-		(function(a){a.fn.hoverIntent=function(l,j){var m={sensitivity:7,interval:100,timeout:0};m=a.extend(m,j?{over:l,out:j}:l);var o,n,h,d;var e=function(f){o=f.pageX;n=f.pageY};var c=function(g,f){f.hoverIntent_t=clearTimeout(f.hoverIntent_t);if((Math.abs(h-o)+Math.abs(d-n))<m.sensitivity){a(f).unbind("mousemove",e);f.hoverIntent_s=1;return m.over.apply(f,[g])}else{h=o;d=n;f.hoverIntent_t=setTimeout(function(){c(g,f)},m.interval)}};var i=function(g,f){f.hoverIntent_t=clearTimeout(f.hoverIntent_t);f.hoverIntent_s=0;return m.out.apply(f,[g])};var b=function(q){var f=this;var g=(q.type=="mouseover"?q.fromElement:q.toElement)||q.relatedTarget;while(g&&g!=this){try{g=g.parentNode}catch(q){g=this}}if(g==this){if(a.browser.mozilla){if(q.type=="mouseout"){f.mtout=setTimeout(function(){k(q,f)},30)}else{if(f.mtout){f.mtout=clearTimeout(f.mtout)}}}return}else{if(f.mtout){f.mtout=clearTimeout(f.mtout)}k(q,f)}};var k=function(p,f){var g=jQuery.extend({},p);if(f.hoverIntent_t){f.hoverIntent_t=clearTimeout(f.hoverIntent_t)}if(p.type=="mouseover"){h=g.pageX;d=g.pageY;a(f).bind("mousemove",e);if(f.hoverIntent_s!=1){f.hoverIntent_t=setTimeout(function(){c(g,f)},m.interval)}}else{a(f).unbind("mousemove",e);if(f.hoverIntent_s==1){f.hoverIntent_t=setTimeout(function(){i(g,f)},m.timeout)}}};return this.mouseover(b).mouseout(b)}})(jQuery);
-
+	if ( typeof(jQuery.fn.hoverIntent) == 'undefined' ) {
+		// hoverIntent r6 - Copy of wp-includes/js/hoverIntent.min.js
+		(function(a){a.fn.hoverIntent=function(k,j){var l={sensitivity:7,interval:100,timeout:0};l=a.extend(l,j?{over:k,out:j}:k);var n,m,h,d;var e=function(f){n=f.pageX;m=f.pageY};var c=function(g,f){f.hoverIntent_t=clearTimeout(f.hoverIntent_t);if((Math.abs(h-n)+Math.abs(d-m))<l.sensitivity){a(f).unbind("mousemove",e);f.hoverIntent_s=1;return l.over.apply(f,[g])}else{h=n;d=m;f.hoverIntent_t=setTimeout(function(){c(g,f)},l.interval)}};var i=function(g,f){f.hoverIntent_t=clearTimeout(f.hoverIntent_t);f.hoverIntent_s=0;return l.out.apply(f,[g])};var b=function(o){var g=jQuery.extend({},o);var f=this;if(f.hoverIntent_t){f.hoverIntent_t=clearTimeout(f.hoverIntent_t)}if(o.type=="mouseenter"){h=g.pageX;d=g.pageY;a(f).bind("mousemove",e);if(f.hoverIntent_s!=1){f.hoverIntent_t=setTimeout(function(){c(g,f)},l.interval)}}else{a(f).unbind("mousemove",e);if(f.hoverIntent_s==1){f.hoverIntent_t=setTimeout(function(){i(g,f)},l.timeout)}}};return this.bind("mouseenter",b).bind("mouseleave",b)}})(jQuery);
+	}
 	jQuery(document).ready(function($){
 		var adminbar = $('#wpadminbar'), refresh, touchOpen, touchClose, disableHoverIntent = false;
 
@@ -124,7 +125,8 @@ if ( typeof(jQuery) != 'undefined' ) {
 
 			var id = $(this).attr('href');
 
-			if ( $.browser.webkit && id && id.charAt(0) == '#' ) {
+			var ua = navigator.userAgent.toLowerCase();
+			if ( ua.indexOf('applewebkit') != -1 && id && id.charAt(0) == '#' ) {
 				setTimeout(function () {
 					$(id).focus();
 				}, 100);
diff --git a/wp-includes/js/autosave.js b/wp-includes/js/autosave.js
index 3920d36061..38af0eb149 100644
--- a/wp-includes/js/autosave.js
+++ b/wp-includes/js/autosave.js
@@ -87,7 +87,8 @@ jQuery(document).ready( function($) {
 		 * Workaround for WebKit bug preventing a form submitting twice to the same action.
 		 * https://bugs.webkit.org/show_bug.cgi?id=28633
 		 */
-		if ( $.browser.safari ) {
+		var ua = navigator.userAgent.toLowerCase();
+		if ( ua.indexOf('safari') != -1 && ua.indexOf('chrome') == -1 ) {
 			$('form#post').attr('action', function(index, value) {
 				return value + '?t=' + new Date().getTime();
 			});
diff --git a/wp-includes/js/thickbox/thickbox.js b/wp-includes/js/thickbox/thickbox.js
index 995c60fee2..e874446b80 100644
--- a/wp-includes/js/thickbox/thickbox.js
+++ b/wp-includes/js/thickbox/thickbox.js
@@ -20,7 +20,7 @@ jQuery(document).ready(function(){
 
 //add thickbox to href & area elements that have a class of .thickbox
 function tb_init(domChunk){
-	jQuery(domChunk).live('click', tb_click);
+	jQuery('body').on('click', domChunk, tb_click);
 }
 
 function tb_click(){
@@ -230,10 +230,8 @@ function tb_show(caption, url, imageGroup) {//function called when the user clic
 					jQuery("#TB_window").css({'visibility':'visible'});
 				}else if(url.indexOf('TB_iframe') != -1){
 					tb_position();
-					if(jQuery.browser.safari){//safari needs help because it will not fire iframe onload
-						jQuery("#TB_load").remove();
-						jQuery("#TB_window").css({'visibility':'visible'});
-					}
+					jQuery("#TB_load").remove();
+					jQuery("#TB_window").css({'visibility':'visible'});
 				}else{
 					jQuery("#TB_ajaxContent").load(url += "&random=" + (new Date().getTime()),function(){//to do a post change this load method
 						tb_position();