consolidate counter parsing code

functions.js

@@ -344,18 +344,8 @@ if (!xmlhttp_rpc && typeof XMLHttpRequest!='undefined') {
 	xmlhttp_rpc = new XMLHttpRequest();
 }
 
-function all_counters_callback() {
-	if (xmlhttp_rpc.readyState == 4) {
+function parse_counters(reply, f_document) {
 	try {
-			if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
-				notify("[all_counters_callback] backend did not return valid XML");
-				return;
-			}
-	
-			var reply = xmlhttp_rpc.responseXML.firstChild;
-	
-			var f_document = parent.frames["feeds-frame"].document;
-	
 		for (var l = 0; l < reply.childNodes.length; l++) {
 			var id = reply.childNodes[l].getAttribute("id");
 			var t = reply.childNodes[l].getAttribute("type");
@@ -404,6 +394,24 @@ function all_counters_callback() {
 				}			
 			}
 		}
+	} catch (e) {
+		exception_error(e);
+	}
+}
+
+function all_counters_callback() {
+	if (xmlhttp_rpc.readyState == 4) {
+		try {
+			if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
+				notify("[all_counters_callback] backend did not return valid XML");
+				return;
+			}
+	
+			var reply = xmlhttp_rpc.responseXML.firstChild;
+			var f_document = parent.frames["feeds-frame"].document;
+
+			parse_counters(reply, f_document);
+	
 		} catch (e) {
 			exception_error("all_counters_callback", e);
 		}

tt-rss.js

@@ -93,34 +93,7 @@ function refetch_callback() {
 	
 			var f_document = window.frames["feeds-frame"].document;
 
-			for (var l = 0; l < reply.childNodes.length; l++) {
-				var id = reply.childNodes[l].getAttribute("id");
-				var ctr = reply.childNodes[l].getAttribute("counter");
-	
-				var feedctr = f_document.getElementById("FEEDCTR-" + id);
-				var feedu = f_document.getElementById("FEEDU-" + id);
-				var feedr = f_document.getElementById("FEEDR-" + id);
-	
-				if (id == "global-unread") {
-					global_unread = ctr;
-					continue;
-				}
-	
-				if (feedctr && feedu && feedr) {
-	
-					feedu.innerHTML = ctr;
-		
-					if (ctr > 0) {
-						feedctr.className = "odd";
-						if (!feedr.className.match("Unread")) {
-							feedr.className = feedr.className + "Unread";
-						}
-					} else {
-						feedctr.className = "invisible";
-						feedr.className = feedr.className.replace("Unread", "");
-					}
-				}
-			}  
+			parse_counters(reply, f_document);
 	
 			updateTitle("");
 			notify("All feeds updated.");