only update floatingTitle innerHTML if active article changes

This will boost scrolling performance pretty much and avoid flickering of floatingTitle

diff --git a/js/viewfeed.js b/js/viewfeed.js
index c20c5a39b30aa6a9c84638fd565d2ebd409d7836..b7e321d735497e6b7b01ec8d3698a2f877536826 100644 (file)
--- a/js/viewfeed.js
+++ b/js/viewfeed.js
@@ -2208,9 +2208,10 @@ function updateFloatingTitle() {
 
                                var header = child.getElementsByClassName("cdmHeader")[0];
 
-                               $("floatingTitle").setAttribute("rowid", child.id);
-                               $("floatingTitle").innerHTML =
-                                       header.innerHTML;
+                               if (child.id != $("floatingTitle").getAttribute("rowid")) {
+                                       $("floatingTitle").setAttribute("rowid", child.id);
+                                       $("floatingTitle").innerHTML = header.innerHTML;
+                               }
 
                                if (child.offsetTop < hf.scrollTop - header.offsetHeight - 100 &&
                                                child.offsetTop + child.offsetHeight - hf.scrollTop > 100)