diff --git a/src/prototype/dom/dom.js b/src/prototype/dom/dom.js
index ea6fc1332..19523b1a8 100644
--- a/src/prototype/dom/dom.js
+++ b/src/prototype/dom/dom.js
@@ -3012,7 +3012,10 @@
     getOpacity: getOpacity
   });
 
-  if ('styleFloat' in DIV.style) {
+  if (Prototype.Browser.Opera) {
+    // Opera also has 'styleFloat' in DIV.style
+    methods.getStyle = getStyle_Opera;
+  } else if ('styleFloat' in DIV.style) {
     methods.getStyle = getStyle_IE;
     methods.setOpacity = setOpacity_IE;
     methods.getOpacity = getOpacity_IE;