fix for #40594, switch to DOM2

r=sspitzer

mailnews/base/prefs/resources/content/AccountManager.js

@@ -80,7 +80,7 @@ function onLoad() {
   duplicateButton = document.getElementById("duplicateButton");
   deleteButton = document.getElementById("deleteButton");
   setDefaultButton = document.getElementById("setDefaultButton");
-  
+
   selectFirstAccount()
 }
 
@@ -101,7 +101,7 @@ function findFirstTreeItem(tree) {
   
   var treechildren;
   for (var i=0;i<children.length; i++) {
-    if (children[i].tagName == "treechildren") {
+    if (children[i].localName == "treechildren") {
       treechildren = children[i];
       break;
     }
@@ -109,7 +109,7 @@ function findFirstTreeItem(tree) {
 
   var children = treechildren.childNodes;
   for (var i=0; i<children.length; i++) {
-    if (children[i].tagName == "treeitem")
+    if (children[i].localName == "treeitem")
       return children[i];
   }
 }
@@ -530,7 +530,7 @@ function restorePage(pageId, serverId) {
 //
 function getFormElementValue(formElement) {
  try {
-  var type = formElement.tagName;
+  var type = formElement.localName;
   if (type=="checkbox") {
     if (formElement.getAttribute("reversed"))
       return !formElement.checked;
@@ -576,7 +576,7 @@ function setFormElementValue(formElement, value) {
   
   //formElement.value = formElement.defaultValue;
   //  formElement.checked = formElement.defaultChecked;
-  var type = formElement.tagName;
+  var type = formElement.localName;
   if (type == "checkbox") {
     if (value == undefined) {
       if (formElement.defaultChecked)
@@ -712,7 +712,7 @@ function getServerIdAndPageIdFromTree(tree)
 
   // for toplevel treeitems, we just use the current treeitem
   //  dump("servernode is " + servernode + "\n");
-  if (servernode.tagName != "treeitem") {
+  if (servernode.localName != "treeitem") {
     servernode = node;
   }
   serverId = servernode.getAttribute('id');  

mailnews/base/prefs/resources/content/SmtpServerList.js

@@ -116,9 +116,9 @@ function refreshServerList()
     // recreate <treechildren>
     // note - I tried creating the <treechildren> node pre-populated,
     // but the tree wouldn't notice the update
-    dump("Removing " + serverList.firstChild.tagName + "\n");
+    dump("Removing " + serverList.firstChild.localName + "\n");
     if (serverList.firstChild &&
-        serverList.firstChild.tagName.toLowerCase() == "treechildren")
+        serverList.firstChild.localName.toLowerCase() == "treechildren")
         serverList.removeChild(serverList.firstChild);
 
     var treeChildren = document.createElement("treechildren");

mailnews/base/prefs/resources/content/am-identity-advanced.js

@@ -73,5 +73,5 @@ function onOk()
 function onSelected(event)
 {
     serverList.setAttribute("selectedKey", event.target.getAttribute("key"));
-    dump("Something selected on " + event.target.tagName + "\n");
+    dump("Something selected on " + event.target.localName + "\n");
 }

mailnews/base/prefs/resources/content/am-imap-advanced.js

@@ -42,7 +42,7 @@ function onLoad()
         var slot = controls[i].id;
         var val = server[slot];
 
-        if (controls[i].tagName.toLowerCase() == "checkbox")
+        if (controls[i].localName.toLowerCase() == "checkbox")
             controls[i].checked = val;
         else
             controls[i].value = val;
@@ -59,7 +59,7 @@ function onOk()
     for (var i=0; i<controls.length; i++) {
         var slot = controls[i].id;
         if (slot) {
-            if (controls[i].tagName.toLowerCase() == "checkbox") {
+            if (controls[i].localName.toLowerCase() == "checkbox") {
                  server[slot] = controls[i].checked;
             }
             else

mailnews/base/search/resources/content/FilterEditor.js

@@ -106,7 +106,7 @@ function initializeDialog(filter)
 
         if (targets && targets.length > 0) {
             var target = targets[0];
-            if (target.tagName == "menuitem")
+            if (target.localName == "menuitem")
                 gActionTargetElement.selectedItem = target;
         }
     } else if (filter.action == nsMsgFilterAction.ChangePriority) {

mailnews/base/search/resources/content/searchTermOverlay.js

@@ -187,7 +187,7 @@ function removeSearchRow(index)
     // searchattribute to find the first <treeitem>
     var treeItemRow = searchTermElement.searchattribute;
     while (treeItemRow) {
-        if (treeItemRow.tagName == "treeitem") break;
+        if (treeItemRow.localName == "treeitem") break;
         treeItemRow = treeItemRow.parentNode;
     }