add separate class for virtual cats to prevent resorting

feedlist.js

@@ -382,7 +382,7 @@ function feedlist_init() {
 
 		init_collapsable_feedlist(getInitParam("theme"));
 
-		Sortable.create('feedList', {onChange: feedlist_dragsorted});
+		Sortable.create('feedList', {onChange: feedlist_dragsorted, only: "feedCat"});
 
 	} catch (e) {
 		exception_error("feedlist/init", e);

functions.php

@@ -4095,7 +4095,13 @@
 				$inner_title_class = "catTitleNL";
 			}
 
-			print "<li class=\"feedCat\" id=\"FCAT-$cat_id\">
+			if ($cat_id > 0) {
+				$cat_class = "feedCat";
+			} else {
+				$cat_class = "virtCat";
+			}
+
+			print "<li class=\"$cat_class\" id=\"FCAT-$cat_id\">
 				<img onclick=\"toggleCollapseCat($cat_id)\" class=\"catCollapse\"
 					title=\"".__('Click to collapse category')."\"
 					src=\"images/cat-collapse.png\"><span class=\"$inner_title_class\" 

tt-rss.css

@@ -80,7 +80,7 @@ ul.feedList {
 	font-family : "Lucida Grande", Tahoma, Arial, sans-serif;
 }
 
-ul.feedList li.feedCat {
+ul.feedList li.feedCat, ul.feedList li.virtCat {
 	margin : 0px;
 	padding : 3px 0px 3px 0px;
 	color : #707070;
@@ -91,12 +91,12 @@ ul.feedList img.catCollapse {
 	cursor : pointer;
 }
 
-ul.feedList li.feedCat span.catTitle {
+ul.feedList span.catTitle {
 	color : #707070;
 	cursor : pointer;
 }
 
-ul.feedList li.feedCat span.catTitle:hover {
+ul.feedList span.catTitle:hover {
 	color : #4684ff;
 }