156368 patch by t.bugz@lament.cjb.net r=naving sr=bienvenu a=roc+moz fixing quicksearch fails if focus was in threadpane before search box

mailnews/base/resources/content/commandglue.js

@@ -110,13 +110,13 @@ function setTitleFromFolder(msgfolder, subject)
     else
       title = "";
 
-    if (msgfolder.isServer) 
+    if (msgfolder.isServer)
     {
-       if (server.type == "none")
-         title += server.prettyName;
-       else
-         // <hostname>
-         title += server.hostName;
+      if (server.type == "none")
+        title += server.prettyName;
+      else
+       // <hostname>
+        title += server.hostName;
     }
     else {
         var middle;
@@ -712,6 +712,7 @@ function FolderPaneSelectionChange()
               if (searchInput) 
                 searchInput.value = "";
             }
+            ClearMessagePane();
             ChangeFolderByURI(folderResource.Value, viewType, viewFlags, sortType, sortOrder);
         }
     }
@@ -725,10 +726,8 @@ function FolderPaneSelectionChange()
       UpdateMailToolbar("gAccountCentralLoaded");
     else if (gFakeAccountPageLoaded)
       UpdateMailToolbar("gFakeAccountPageLoaded");
-    else {
+    else
       document.getElementById('advancedButton').setAttribute("disabled" , !(IsCanSearchMessagesEnabled()));
-      ClearMessagePane();
-    }
 
     if (gDisplayStartupPage)
     {

mailnews/base/resources/content/msgMail3PaneWindow.js

@@ -784,7 +784,7 @@ function GetMessagePane()
 function GetMessagePaneFrame()
 {
     if (gMessagePaneFrame) return gMessagePaneFrame;
-    gMessagePaneFrame = top.frames['messagepane'];
+    gMessagePaneFrame = document.getElementById("messagepane");
     return gMessagePaneFrame;
 }
 
@@ -871,9 +871,9 @@ function ClearMessagePane()
 	{	
     gHaveLoadedMessage = false;
 		gCurrentDisplayedMessage = null;
-		if (window.frames["messagepane"].location != "about:blank")
-		    window.frames["messagepane"].location = "about:blank";
-		// hide the message header view AND the message pane...
+		if (GetMessagePaneFrame().currentURI != "about:blank")
+		  GetMessagePaneFrame().loadURI("about:blank");		
+    // hide the message header view AND the message pane...
 		HideMessageHeaderPane();
 	}
 }
@@ -1260,3 +1260,4 @@ function GetFolderAttribute(tree, source, attribute)
         target = target.QueryInterface(Components.interfaces.nsIRDFLiteral).Value;
     return target;
 }
+