diff --git a/src/HTMLImports.js b/src/HTMLImports.js
index 4f4791c..83d0465 100644
--- a/src/HTMLImports.js
+++ b/src/HTMLImports.js
@@ -8,17 +8,15 @@
  */
  (function(scope) {
 
+// imports
 var useNative = scope.useNative;
 var flags = scope.flags;
-var IMPORT_LINK_TYPE = 'import';
-
-// TODO(sorvell): SD polyfill intrusion
-var mainDoc = window.ShadowDOMPolyfill ? 
-    ShadowDOMPolyfill.wrapIfNeeded(document) : document;
+var IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;
 
 if (!useNative) {
 
   // imports
+  var rootDocument = scope.rootDocument;
   var xhr = scope.xhr;
   var Loader = scope.Loader;
   var parser = scope.parser;
@@ -60,7 +58,7 @@ if (!useNative) {
     // find the proper set of load selectors for a given node
     loadSelectorsForNode: function(node) {
       var doc = node.ownerDocument || node;
-      return doc === mainDoc ? this.documentPreloadSelectors :
+      return doc === rootDocument ? this.documentPreloadSelectors :
           this.importsPreloadSelectors;
     },
     
@@ -170,7 +168,7 @@ if (!useNative) {
     };
 
     Object.defineProperty(document, 'baseURI', baseURIDescriptor);
-    Object.defineProperty(mainDoc, 'baseURI', baseURIDescriptor);
+    Object.defineProperty(rootDocument, 'baseURI', baseURIDescriptor);
   }
 
   // IE shim for CustomEvent
diff --git a/src/Observer.js b/src/Observer.js
index bfdd04c..69f4f66 100644
--- a/src/Observer.js
+++ b/src/Observer.js
@@ -8,11 +8,14 @@
  */
 (function(scope){
 
+// imports
 var IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;
-var importSelector = 'link[rel=' + IMPORT_LINK_TYPE + ']';
 var importer = scope.importer;
 var parser = scope.parser;
 
+var importSelector = 'link[rel=' + IMPORT_LINK_TYPE + ']';
+
+
 // we track mutations for addedNodes, looking for imports
 function handler(mutations) {
   for (var i=0, l=mutations.length, m; (i<l) && (m=mutations[i]); i++) {
diff --git a/src/Parser.js b/src/Parser.js
index f6f9462..21df183 100644
--- a/src/Parser.js
+++ b/src/Parser.js
@@ -8,12 +8,11 @@
  */
 (function(scope) {
 
-var IMPORT_LINK_TYPE = 'import';
+// imports
+var rootDocument = scope.rootDocument;
 var flags = scope.flags;
 var isIE = scope.isIE;
-// TODO(sorvell): SD polyfill intrusion
-var mainDoc = window.ShadowDOMPolyfill ? 
-    window.ShadowDOMPolyfill.wrapIfNeeded(document) : document;
+var IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;
 
 // importParser
 // highlander object to manage parsing of imports
@@ -237,7 +236,7 @@ var importParser = {
   // determine the next element in the tree which should be parsed
   nextToParse: function() {
     this._mayParse = [];
-    return !this.parsingElement && (this.nextToParseInDoc(mainDoc) || 
+    return !this.parsingElement && (this.nextToParseInDoc(rootDocument) || 
         this.nextToParseDynamic());
   },
 
@@ -268,7 +267,8 @@ var importParser = {
   // return the set of parse selectors relevant for this node.
   parseSelectorsForNode: function(node) {
     var doc = node.ownerDocument || node;
-    return doc === mainDoc ? this.documentSelectors : this.importsSelectors;
+    return doc === rootDocument ? this.documentSelectors :
+        this.importsSelectors;
   },
 
   isParsed: function(node) {
diff --git a/src/base.js b/src/base.js
index 212c2cd..96843e4 100755
--- a/src/base.js
+++ b/src/base.js
@@ -9,9 +9,9 @@
 
 (function(scope) {
 
-var hasNative = ('import' in document.createElement('link'));
+var IMPORT_LINK_TYPE = 'import';
+var hasNative = (IMPORT_LINK_TYPE in document.createElement('link'));
 var useNative = hasNative;
-
 var isIE = /Trident/.test(navigator.userAgent);
 
 // TODO(sorvell): SD polyfill intrusion
@@ -20,7 +20,7 @@ var wrap = function(node) {
   return hasShadowDOMPolyfill ? ShadowDOMPolyfill.wrapIfNeeded(node) : node;
 };
 
-var mainDoc = wrap(document);
+var rootDocument = wrap(document);
     
 // NOTE: We cannot polyfill document.currentScript because it's not possible
 // both to override and maintain the ability to capture the native value;
@@ -40,14 +40,14 @@ var currentScriptDescriptor = {
 };
 
 Object.defineProperty(document, '_currentScript', currentScriptDescriptor);
-Object.defineProperty(mainDoc, '_currentScript', currentScriptDescriptor);
+Object.defineProperty(rootDocument, '_currentScript', currentScriptDescriptor);
 
 // call a callback when all HTMLImports in the document at call (or at least
 //  document ready) time have loaded.
 // 1. ensure the document is in a ready state (has dom), then 
 // 2. watch for loading of imports and call callback when done
-function whenImportsReady(callback, doc) {
-  doc = doc || mainDoc;
+function whenReady(callback, doc) {
+  doc = doc || rootDocument;
   // if document is loading, wait and try again
   whenDocumentReady(function() {
     watchImportsLoad(callback, doc);
@@ -87,8 +87,8 @@ function watchImportsLoad(callback, doc) {
   var imports = doc.querySelectorAll('link[rel=import]');
   var loaded = 0, l = imports.length;
   function checkDone(d) { 
-    if (loaded == l) {
-      callback && callback();
+    if ((loaded == l) && callback) {
+       callback();
     }
   }
   function loadedImport(e) {
@@ -181,10 +181,10 @@ if (useNative) {
 // have loaded. This event is required to simulate the script blocking 
 // behavior of native imports. A main document script that needs to be sure
 // imports have loaded should wait for this event.
-whenImportsReady(function() {
+whenReady(function() {
   HTMLImports.ready = true;
   HTMLImports.readyTime = new Date().getTime();
-  mainDoc.dispatchEvent(
+  rootDocument.dispatchEvent(
     new CustomEvent('HTMLImportsLoaded', {bubbles: true})
   );
 });
@@ -192,10 +192,9 @@ whenImportsReady(function() {
 // exports
 scope.useNative = useNative;
 scope.isImportLoaded = isImportLoaded;
-scope.whenReady = whenImportsReady;
+scope.whenReady = whenReady;
+scope.rootDocument = rootDocument;
+scope.IMPORT_LINK_TYPE = IMPORT_LINK_TYPE;
 scope.isIE = isIE;
 
-// deprecated
-scope.whenImportsReady = whenImportsReady;
-
 })(window.HTMLImports);
\ No newline at end of file