diff --git a/extensions/inspector/resources/content/viewers/xblBindings/xblBindings.js b/extensions/inspector/resources/content/viewers/xblBindings/xblBindings.js
index 2f180d6034c7..cdc91d9506d0 100644
--- a/extensions/inspector/resources/content/viewers/xblBindings/xblBindings.js
+++ b/extensions/inspector/resources/content/viewers/xblBindings/xblBindings.js
@@ -311,24 +311,24 @@ XBLBindings.prototype =
     
     // disable/enable radio buttons
     var hasget = aProp && (aProp.hasAttribute("onget") || aProp.getElementsByTagName("getter").length);
-    getradio.setAttribute("disabled", !hasget);
-    if (!hasget && getradio.checked)
-      getradio.removeAttribute("checked");
+    getradio.disabled = !hasget;
+    if (!hasget && getradio.hasAttribute("selected"))
+      getradio.removeAttribute("selected");
     var hasset = aProp && (aProp.hasAttribute("onset") || aProp.getElementsByTagName("setter").length);
-    setradio.setAttribute("disabled", !hasset);
-    if (!hasset && setradio.checked)
-      setradio.removeAttribute("checked");
+    setradio.disabled = !hasset;
+    if (!hasset && setradio.hasAttribute("selected"))
+      setradio.removeAttribute("selected");
     
     // make sure at least one is checked
-    if (!setradio.checked && !getradio.checked) {
+    if (!setradio.hasAttribute("selected") && !getradio.hasAttribute("selected")) {
       if (!getradio.disabled) 
-        getradio.setAttribute("checked", "true");
+        getradio.setAttribute("selected", "true");
       else if (!setradio.disabled)
-        setradio.setAttribute("checked", "true");
+        setradio.setAttribute("selected", "true");
     }
     
     // display text
-    var et = getradio.hasAttribute("checked") ? "get" : setradio.hasAttribute("checked") ? "set" : null;
+    var et = getradio.hasAttribute("selected") ? "get" : setradio.hasAttribute("selected") ? "set" : null;
     var text = "";
     if (!et || !aProp) {
       // do nothing
diff --git a/extensions/inspector/resources/content/viewers/xblBindings/xblBindings.xul b/extensions/inspector/resources/content/viewers/xblBindings/xblBindings.xul
index 62aed5c6aace..5097b7157caa 100644
--- a/extensions/inspector/resources/content/viewers/xblBindings/xblBindings.xul
+++ b/extensions/inspector/resources/content/viewers/xblBindings/xblBindings.xul
@@ -47,7 +47,7 @@
     <multipanel id="bxProps" label="Properties" open="true" persist="open">
       <vbox flex="1">
         <radiogroup class="outset">
-          <radio id="raPropGetter" label="getter" checked="true" oncommand="viewer.onPropSelected()"/>
+          <radio id="raPropGetter" label="getter" selected="true" oncommand="viewer.onPropSelected()"/>
           <radio id="raPropSetter" label="setter" oncommand="viewer.onPropSelected()"/>
         </radiogroup>
         <outliner id="olProps" class="outliner-list plain" flex="1"