Fixed #5067 -- Fixed a problem with javascript popup widgets appearin…

…g in the wrong place if they were in a overflow=scroll block. Thanks to Erich Schmid for the original fix, and Robert Coup for the updated patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@6172 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/admin/media/js/core.js

@@ -1,5 +1,9 @@
 // Core javascript helper functions
 
+// basic browser identification & version
+var isOpera = (navigator.userAgent.indexOf("Opera")>=0) && parseFloat(navigator.appVersion);
+var isIE = ((document.all) && (!isOpera)) && parseFloat(navigator.appVersion.split("MSIE ")[1].split(";")[0]);
+
 // Cross-browser event handlers.
 function addEvent(obj, evType, fn) {
     if (obj.addEventListener) {
@@ -71,9 +75,13 @@ function findPosX(obj) {
     var curleft = 0;
     if (obj.offsetParent) {
         while (obj.offsetParent) {
-            curleft += obj.offsetLeft;
+            curleft += obj.offsetLeft - ((isOpera) ? 0 : obj.scrollLeft);
             obj = obj.offsetParent;
         }
+        // IE offsetParent does not include the top-level 
+        if (isIE && obj.parentElement){
+            curleft += obj.offsetLeft - obj.scrollLeft;
+        }
     } else if (obj.x) {
         curleft += obj.x;
     }
@@ -84,9 +92,13 @@ function findPosY(obj) {
     var curtop = 0;
     if (obj.offsetParent) {
         while (obj.offsetParent) {
-            curtop += obj.offsetTop;
+            curtop += obj.offsetTop - ((isOpera) ? 0 : obj.scrollTop);
             obj = obj.offsetParent;
         }
+        // IE offsetParent does not include the top-level 
+        if (isIE && obj.parentElement){
+            curtop += obj.offsetTop - obj.scrollTop;
+        }
     } else if (obj.y) {
         curtop += obj.y;
     }