From 5630369f42a444f2cad908b36484fa11610949db Mon Sep 17 00:00:00 2001
From: Tobie Langel <tobie.langel@gmail.com>
Date: Tue, 5 Feb 2008 03:35:04 +0000
Subject: [PATCH] prototype: Make Prototype tagName comparisons
 XHTML-compliant. Closes #11012, #11013, #11014.

---
 CHANGELOG  | 2 ++
 src/dom.js | 8 ++++----
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index 0c30302..6bcc971 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,5 @@
+* Make Prototype tagName comparisons XHTML-compliant. Closes #11012, #11013, #11014. [cfis, Tobie Langel]
+
 * Avoid breaking Element.prototype in browsers which support it. Closes #11004. [cfis, Tobie Langel]
 
 * Prevent Element#cumulativeOffset, Element#getOffsetParent, Element#positionedOffset, Element#viewportOffset and Element#clonePosition from throwing an error in IE when called on a parent-less element. Closes #9416, #10192, #10248. [ronstoney, psiborg, kangax]
diff --git a/src/dom.js b/src/dom.js
index 936b408..a2c3862 100644
--- a/src/dom.js
+++ b/src/dom.js
@@ -518,7 +518,7 @@ Element.Methods = {
       valueL += element.offsetLeft || 0;
       element = element.offsetParent;
       if (element) {
-        if (element.tagName == 'BODY') break;
+        if (element.tagName.toUpperCase() == 'BODY') break;
         var p = Element.getStyle(element, 'position');
         if (p !== 'static') break;
       }
@@ -603,7 +603,7 @@ Element.Methods = {
 
     element = forElement;
     do {
-      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
+      if (!Prototype.Browser.Opera || element.tagName.toUpperCase() == 'BODY') {
         valueT -= element.scrollTop  || 0;
         valueL -= element.scrollLeft || 0;
       }
@@ -903,7 +903,7 @@ else if (Prototype.Browser.WebKit) {
       (value < 0.00001) ? 0 : value;
     
     if (value == 1)
-      if(element.tagName == 'IMG' && element.width) { 
+      if(element.tagName.toUpperCase() == 'IMG' && element.width) { 
         element.width++; element.width--;
       } else try {
         var n = document.createTextNode(' ');
@@ -1060,7 +1060,7 @@ Element.extend = (function() {
         element.nodeType != 1 || element == window) return element;
 
     var methods = Object.clone(Methods),
-      tagName = element.tagName, property, value;
+      tagName = element.tagName.toUpperCase(), property, value;
     
     // extend methods for specific tags
     if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);