diff --git a/core/modules/startup/startup.js b/core/modules/startup/startup.js
index 377974ad6..6bdb2e9a9 100755
--- a/core/modules/startup/startup.js
+++ b/core/modules/startup/startup.js
@@ -78,9 +78,7 @@ exports.startup = function() {
 	// Host-specific startup
 	if($tw.browser) {
 		// Install the popup manager
-		$tw.popup = new $tw.utils.Popup({
-			rootElement: document.body
-		});
+		$tw.popup = new $tw.utils.Popup();
 		// Install the animator
 		$tw.anim = new $tw.utils.Animator();
 	}
diff --git a/core/modules/utils/dom/popup.js b/core/modules/utils/dom/popup.js
index c29ad5400..7ee405d20 100644
--- a/core/modules/utils/dom/popup.js
+++ b/core/modules/utils/dom/popup.js
@@ -18,7 +18,7 @@ Creates a Popup object with these options:
 */
 var Popup = function(options) {
 	options = options || {};
-	this.rootElement = options.rootElement || document.body;
+	this.rootElement = options.rootElement || document.documentElement;
 	this.popups = []; // Array of {title:,wiki:,domNode:} objects
 };