fix: für IE muss das slideout Panel z-index 0 haben

bin/SlideOut.js

@@ -76,6 +76,15 @@ define('package/quiqqer/menu/bin/SlideOut', [
 
             Elm = Elm.getParent();
 
+            // fix for IE - z-index must have the value 0
+            if (navigator.appName == 'Microsoft Internet Explorer' ||
+                !!(navigator.userAgent.match(/Trident/) ||
+                navigator.userAgent.match(/rv:11/)) ||
+                (typeof $.browser !== "undefined" && $.browser.msie == 1))
+            {
+                Elm.setStyle('z-index', 1);
+            }
+
             // body childrens
             var children = document.body.getChildren();
             var BodyWrapper = new Element('div').inject(document.body);