Index: univention-management-console-frontend/umc/dialog/LoginDialog.js
===================================================================
--- univention-management-console-frontend/umc/dialog/LoginDialog.js	(Revision 74931)
+++ univention-management-console-frontend/umc/dialog/LoginDialog.js	(Arbeitskopie)
@@ -71,8 +71,6 @@
 
 		_currentResult: null,
 
-		_scrollPosY: 0,
-
 		id: 'umcLoginWrapper',
 
 		open: false,
@@ -468,8 +466,6 @@
 		_show: function() {
 			var deferred;
 			query('#umcLoginWrapper').style('display', 'block');
-			this._scrollPosY = window.scrollY;
-			window.scrollTo(0, 0);
 			query('#umcLoginDialog').style('opacity', '1');  // baseFx.fadeOut sets opacity to 0
 			this._setFocus();
 			if (has('ie') < 10) {
@@ -522,7 +518,6 @@
 			// hide the dialog
 			var hide = lang.hitch(this, function() {
 				query('#umcLoginWrapper').style('display', 'none');
-				window.scrollTo(0, this._scrollPosY);
 				Dialog._DialogLevelManager.hide(this);
 				this.standby(false);
 				try {
Index: univention-management-console-frontend-theme/dijit-claro-stylus/document.styl
===================================================================
--- univention-management-console-frontend-theme/dijit-claro-stylus/document.styl	(Revision 74921)
+++ univention-management-console-frontend-theme/dijit-claro-stylus/document.styl	(Arbeitskopie)
@@ -20,6 +20,10 @@
 	background: white;
 }
 
+body {
+	height: 100%;
+}
+
 .umc td,
 .umc th {
 	padding: 0em 1em 0.3em 0em;
Index: univention-management-console-frontend-theme/dijit-claro-stylus/site/login.styl
===================================================================
--- univention-management-console-frontend-theme/dijit-claro-stylus/site/login.styl	(Revision 74921)
+++ univention-management-console-frontend-theme/dijit-claro-stylus/site/login.styl	(Arbeitskopie)
@@ -1,12 +1,23 @@
 @import "../variables";
 
 #umcLoginWrapper {
-	position: absolute;
+	position: fixed;
 	height: 100%;
 	width: 100%;
 	display: none;
+	overflow: auto;
 }
 
+.dijitDialogUnderlayWrapper {
+	position: fixed;
+	top: 0px !important;
+}
+
+.umcTopContainer {
+	height: 100%;
+	overflow: auto;
+}
+
 #umcLoginDialog, .umcLoginDialog {
 	background-image: url('../images/login_bg.png');
 	background-color: #eeeeef;