Index: lams_central/web/includes/javascript/dialog.js
===================================================================
diff -u -r917cdcbcb307b39b90b65f7b97a5b5f7863d7c5b -r5cadb8264db63d0022b2d4558cb48e38239f1f6e
--- lams_central/web/includes/javascript/dialog.js	(.../dialog.js)	(revision 917cdcbcb307b39b90b65f7b97a5b5f7863d7c5b)
+++ lams_central/web/includes/javascript/dialog.js	(.../dialog.js)	(revision 5cadb8264db63d0022b2d4558cb48e38239f1f6e)
@@ -158,8 +158,8 @@
 				modalDialog.on('drag', function(event, ui){
 					// pass the event to the dialog, not its internal element
 					dialog.offset({
-						'top'  : ui.offset.top + 5,
-						'left' : ui.offset.left + 5
+						'top'  : Math.min(window.innerHeight - 30, Math.max(0, ui.offset.top + 5)),
+						'left' : Math.min(window.innerWidth - 200, Math.max(0, ui.offset.left + 5))
 					});
 					modalDialog.css({
 						'position' : 'static'