diff --git a/unpacked/extensions/MathZoom.js b/unpacked/extensions/MathZoom.js
index cb5e8dcde..3cd66df2f 100644
--- a/unpacked/extensions/MathZoom.js
+++ b/unpacked/extensions/MathZoom.js
@@ -56,6 +56,11 @@
         "background-color":"white", opacity:0, filter:"alpha(opacity=0)"
       },
       
+      "#MathJax_ZoomFrame": {
+        position:"relative", display:"inline-block",
+        height:0, width:0
+      },
+      
       "#MathJax_ZoomEventTrap": {
         position:"absolute", left:0, top:0, "z-index":302,
         display:"inline-block", border:0, padding:0, margin:0,
@@ -135,10 +140,7 @@
       var Mw = Math.floor(.85*document.body.clientWidth),
           Mh = Math.floor(.85*Math.max(document.body.clientHeight,document.documentElement.clientHeight));
       var div = HTML.Element(
-        "span",{
-            style: {position:"relative", display:"inline-block", height:0, width:0},
-            id:"MathJax_ZoomFrame"
-        },[
+        "span",{id:"MathJax_ZoomFrame"},[
           ["span",{id:"MathJax_ZoomOverlay", onmousedown:this.Remove}],
           ["span",{
             id:"MathJax_Zoom", onclick:this.Remove,
diff --git a/unpacked/jax/element/mml/jax.js b/unpacked/jax/element/mml/jax.js
index 872f8dc94..11b14f11b 100644
--- a/unpacked/jax/element/mml/jax.js
+++ b/unpacked/jax/element/mml/jax.js
@@ -283,7 +283,7 @@ MathJax.ElementJax.mml.Augment({
       var obj = this.inherit; var root = obj;
       while (obj) {
         var value = obj[name]; if (value == null && obj.attr) {value = obj.attr[name]}
-        if (value != null && !obj.noInheritAttribute[name]) {
+        if (value != null && obj.noInheritAttribute && !obj.noInheritAttribute[name]) {
           var noInherit = obj.noInherit[this.type];
           if (!(noInherit && noInherit[name])) {return value}
         }