fix article header open in new tab button

functions.php

@@ -4634,7 +4634,7 @@
 
 				print "<img src=\"".theme_image($link, 'images/art-zoom.png')."\" 
 						class='tagsPic' style=\"cursor : pointer\"
-						onclick=\"zoomToArticle($id)\"
+						onclick=\"zoomToArticle(event, $id)\"
 						alt='Zoom' title='".__('Open article in new tab')."'>";
 
 				$note_escaped = htmlspecialchars($line['note'], ENT_QUOTES);
@@ -5241,7 +5241,7 @@
 					print "<div style=\"float : right\">";
 
 					print "<img src=\"images/art-zoom.png\" 
-						onclick=\"zoomToArticle($id)\"
+						onclick=\"zoomToArticle(event, $id)\"
 						style=\"cursor : pointer\"
 						alt='Zoom' 
 						title='".__('Open article in new tab')."'>";

viewfeed.js

@@ -1724,7 +1724,8 @@ function zoomToArticle(event, id) {
 				return dijit.byId("content-tabs").selectChild(dijit.byId("ATAB-" + id));
 
 		if (cached_article) {
-			
+			closeArticlePanel();
+		
 			var article_pane = new dijit.layout.ContentPane({ 
 				title: __("Loading...") , content: cached_article, 
 				style: 'padding : 0px;',