diff --git a/pluginwrapper.py b/pluginwrapper.py
index 2e99b995c..55960b7a8 100644
--- a/pluginwrapper.py
+++ b/pluginwrapper.py
@@ -1,13 +1,17 @@
-# plugin wrapper code snippets
+# plugin wrapper code snippets. handled as macros, to ensure that
+# indentation caused by the wrapper function doesn't apply to the plugin code body
+
+# putting everything in a wrapper function that in turn is placed in a
+# script tag on the website allows us to execute in the site's context
+# instead of in the Greasemonkey/Extension/etc. context.
 
 # a cut-down version of GM_info is passed as a parameter to the script
 # (not the full GM_info - it contains the ENTIRE script source!)
 
 start = """
-var plugin_info = (typeof GM_info === 'undefined') ? {} : (function (s) {
-  ['version','name','description'].forEach(function (k) { s[k] = GM_info.script[k]; });
-  return {scriptMetaStr:GM_info.scriptMetaStr, script:s};
-}({}));
+var wrapper = function (plugin_info) {
+// ensure plugin framework is there, even if iitc is not yet loaded
+window.plugin = window.plugin || function () {};
 
 // PLUGIN AUTHORS: writing a plugin outside of the IITC build environment? if so, delete these lines!!
 // (leaving them in place might break the 'About IITC' page or break update checks)
@@ -16,14 +20,9 @@
 plugin_info.pluginId = '@plugin_id@';
 // END PLUGIN AUTHORS NOTE
 
-window = typeof unsafeWindow !== 'undefined' ? unsafeWindow : window;
-// ensure plugin framework is there, even if iitc is not yet loaded
-window.plugin = window.plugin || function () {};
-
 """
 
 setup = """
-
 if (typeof setup !== 'function') {
   var setup = {}; plugin_info.error = 'setup is not a function';
 }
@@ -32,4 +31,16 @@
 if (window.iitcLoaded) { setup(); }
 """
 
-end = ''
+end = """
+} // wrapper end
+var plugin_info = (typeof GM_info === 'undefined') ? {} : (function (s) {
+  ['version','name','description'].forEach(function (k) { s[k] = GM_info.script[k]; });
+  return {scriptMetaStr:GM_info.scriptMetaStr, script:s};
+}({}));
+if (typeof unsafeWindow === 'undefined' || unsafeWindow === window) { return wrapper(plugin_info); }
+// inject code into site context
+var script = document.createElement('script');
+script.append('('+ wrapper +')('+JSON.stringify(plugin_info)+');');
+document.body.appendChild(script).remove();
+
+"""
\ No newline at end of file