Index: wp-includes/js/jquery/jquery.table-hotkeys.js
===================================================================
--- wp-includes/js/jquery/jquery.table-hotkeys.js	(revision 8785)
+++ wp-includes/js/jquery/jquery.table-hotkeys.js	(working copy)
@@ -1,45 +1,66 @@
 (function($){
+	$.fn.filter_visible = function(depth) {
+		depth = depth || 3;
+		var is_visible = function() {
+			var p = $(this);
+			for(i=0; i<depth-1; ++i) {
+				if (!p.is(':visible')) return false;
+				p = p.parent();
+			}
+			return true;
+		}
+		return this.filter(is_visible);
+	};
 	$.table_hotkeys = function(table, keys, opts) {
 		opts = $.extend($.table_hotkeys.defaults, opts);
 		var selected_class = opts.class_prefix + opts.selected_suffix;
-		var destructive_class = opts.class_prefix + opts.destructive_suffix;	
+		var destructive_class = opts.class_prefix + opts.destructive_suffix;
 		var set_current_row = function (tr) {
 			if ($.table_hotkeys.current_row) $.table_hotkeys.current_row.removeClass(selected_class);
 			tr.addClass(selected_class);
 			tr[0].scrollIntoView(false);
 			$.table_hotkeys.current_row = tr;
 		};
-		var next_row = function() {
-			var next = get_adjacent_row('next');
-			if (!next) return false;
-			set_current_row($(next));
-			return true;
+		var adjacent_row_callback = function(which) {
+			if (!adjacent_row(which) && $.isFunction(opts[which+'_page_link_cb'])) {
+				opts[which+'_page_link_cb']();
+			}
 		};
-		var prev_row = function() {
-			var prev = get_adjacent_row('prev');
-			if (!prev) return false;
-			set_current_row($(prev));
+		var get_adjacent_row = function(which) {
+			if (!$.table_hotkeys.current_row) {
+				var first_row = get_first_row();
+				$.table_hotkeys.current_row = first_row;
+				return first_row[0];
+			}
+			var method = 'prev' == which? $.fn.prevAll : $.fn.nextAll;
+			return method.call($.table_hotkeys.current_row, opts.cycle_expr).filter_visible()[0];
+		};
+		var adjacent_row = function(which) {
+			var adj = get_adjacent_row(which);
+			if (!adj) return false;
+			set_current_row($(adj));
 			return true;
 		};
+		var prev_row = function() { return adjacent_row('prev'); };
+		var next_row = function() { return adjacent_row('next'); };
 		var check = function() {
 			$(opts.checkbox_expr, $.table_hotkeys.current_row).each(function() {
 				this.checked = !this.checked;
 			});
 		};
-		var get_adjacent_row = function(which) {
-			if (!$.table_hotkeys.current_row) {
-				var start_row_dom = $(opts.cycle_expr, table)[opts.start_row_index];
-				$.table_hotkeys.current_row = $(start_row_dom);
-				return start_row_dom;
-			}
-			var method = 'prev' == which? $.fn.prevAll : $.fn.nextAll;
-			return method.call($.table_hotkeys.current_row, opts.cycle_expr).filter(':visible')[0];
-		}
+		var get_first_row = function() {
+			return $(opts.cycle_expr, table).filter_visible().eq(opts.start_row_index);
+		};
+		var get_last_row = function() {
+			var rows = $(opts.cycle_expr, table).filter_visible();
+			console.log(rows[rows.length-1]);
+			return rows.eq(rows.length-1);
+		};
 		var make_key_callback = function(expr) {
 			return function() {
 				if ( null == $.table_hotkeys.current_row ) return false;
-				var clickable = $(expr, $.table_hotkeys.current_row).filter(':visible');
-				if (!$($(clickable[0]).parent()[0]).is(':visible')) return false;
+				var clickable = $(expr, $.table_hotkeys.current_row).filter_visible();
+				if (!clickable.length) return false;
 				if (clickable.is('.'+destructive_class)) next_row() || prev_row();
 				clickable.click();
 			}
@@ -59,9 +80,15 @@
 			}
 			return {key: key, expr: expr};
 		};
-		if (!$(opts.cycle_expr, table).length) return;
-		jQuery.hotkeys.add(opts.next_key, opts.hotkeys_opts, next_row);
-		jQuery.hotkeys.add(opts.prev_key, opts.hotkeys_opts, prev_row);
+		var first_row = get_first_row();
+		if (!first_row.length) return;
+		if (opts.highlight_first) {
+			set_current_row(first_row);
+		} else if (opts.highlight_last) {
+			set_current_row(get_last_row());
+		};
+		jQuery.hotkeys.add(opts.prev_key, opts.hotkeys_opts, function() {return adjacent_row_callback('prev')});
+		jQuery.hotkeys.add(opts.next_key, opts.hotkeys_opts, function() {return adjacent_row_callback('next')});
 		jQuery.hotkeys.add(opts.mark_key, opts.hotkeys_opts, check);
 		jQuery.each(keys, function() {
 			var key_expr = make_key_expr(this);
@@ -73,5 +100,5 @@
 	$.table_hotkeys.defaults = {cycle_expr: 'tr', class_prefix: 'vim-', selected_suffix: 'current',
 		destructive_suffix: 'destructive', hotkeys_opts: {disableInInput: true, type: 'keypress'},
 		checkbox_expr: ':checkbox', next_key: 'j', prev_key: 'k', mark_key: 'x',
-		start_row_index: 1};
+		start_row_index: 1, highlight_first: false, highlight_last: false, next_page_link_cb: function() {}, prev_page_link_cb: function() {}};
 })(jQuery);
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Index: wp-includes/script-loader.php
===================================================================
--- wp-includes/script-loader.php	(revision 8785)
+++ wp-includes/script-loader.php	(working copy)
@@ -160,7 +160,9 @@
 		) );
 		$scripts->add( 'admin-comments', '/wp-admin/js/edit-comments.js', array('wp-lists', 'jquery-ui-draggable', 'jquery-ui-resizable', 'quicktags'), '20080828' );
 		$scripts->localize( 'admin-comments', 'adminCommentsL10n', array(
-			'pending' => __('%i% pending') // must look like: "# blah blah"
+			'pending' => __('%i% pending'), // must look like: "# blah blah"
+			'hotkeys_highlight_first' => isset($_GET['hotkeys_highlight_first']),
+			'hotkeys_highlight_last' => isset($_GET['hotkeys_highlight_last']),
 		) );
 		$scripts->add( 'admin-users', '/wp-admin/js/users.js', array('wp-lists'), '20070823' );
 		$scripts->add( 'admin-forms', '/wp-admin/js/forms.js', array('jquery'), '20080729');
Index: wp-admin/js/edit-comments.js
===================================================================
--- wp-admin/js/edit-comments.js	(revision 8785)
+++ wp-admin/js/edit-comments.js	(working copy)
@@ -235,8 +235,23 @@
 $(document).ready(function(){
 	if ( typeof QTags != 'undefined' )
 		ed_reply = new QTags('ed_reply', 'replycontent', 'replycontainer', 'more');
-	if ( typeof $.table_hotkeys != 'undefined' )
-		$.table_hotkeys($('table.widefat'), ['a', 'u', 's', 'd', 'r']);
+	if ( typeof $.table_hotkeys != 'undefined' ) {
+		var make_hotkeys_redirect = function(which) {
+			return function() {
+				var first_last = 'next' == which? 'first' : 'last'; 
+				var l=$('.'+which+'.page-numbers');
+				if (l.length)
+					window.location = l[0].href.replace(/\&hotkeys_highlight_(first|last)=1/g, '')+'&hotkeys_highlight_'+first_last+'=1';
+			}
+		}
+		$.table_hotkeys($('table.widefat'), ['a', 'u', 's', 'd', 'r'],
+			{	highlight_first: adminCommentsL10n.hotkeys_highlight_first,
+				highlight_last: adminCommentsL10n.hotkeys_highlight_last,
+				prev_page_link_cb: make_hotkeys_redirect('prev'),
+				next_page_link_cb: make_hotkeys_redirect('next'),				
+			}
+		);
+	}
 });
 
-})(jQuery);
+})(jQuery);
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