--- a/tag.c	Mon Aug 14 17:48:54 2006 +0200
+++ b/tag.c	Mon Aug 14 17:50:48 2006 +0200
@@ -269,7 +269,8 @@
 		sel->tags[i] = False;
 	sel->tags[arg->i] = True;
 	settitle(sel);
-	arrange(NULL);
+	if(!isvisible(sel))
+		arrange(NULL);
 }
 
 void
@@ -292,6 +293,8 @@
 	if(i == ntags)
 		sel->tags[arg->i] = True;
 	settitle(sel);
+	if(!isvisible(sel))
+		arrange(NULL);
 }