Revert "Offset: simplify jQuery#offsetParent method"

This reverts commit 96447575c23f7b313091750ed84cec05db3a25c6.

diff --git a/src/offset.js b/src/offset.js
index 9160f7e8891c4f8baf0816f85315bf2c6fede15f..882d85893ff680eeb219cfe042a1b423a61f65f5 100644 (file)
--- a/src/offset.js
+++ b/src/offset.js
@@ -160,24 +160,14 @@ jQuery.fn.extend( {
                };
        },
 
-       // This method will return documentElement in the following cases:
-       // 1) For the element inside the iframe without offsetParent, this method will return
-       //    documentElement of the parent window
-       // 2) For the hidden or detached element
-       // 3) For body or html element, i.e. in case of the html node - it will return itself
-       //
-       // but those exceptions were never presented as a real life use-cases
-       // and might be considered as more preferable results.
-       //
-       // This logic, however, is not guaranteed and can change at any point in the future
        offsetParent: function() {
                return this.map( function() {
-                       var offsetParent = this.offsetParent;
+                       var offsetParent = this.offsetParent || docElem;
 
-                       while ( offsetParent && jQuery.css( offsetParent, "position" ) === "static" ) {
+                       while ( offsetParent && ( !jQuery.nodeName( offsetParent, "html" ) &&
+                               jQuery.css( offsetParent, "position" ) === "static" ) ) {
                                offsetParent = offsetParent.offsetParent;
                        }
-
                        return offsetParent || docElem;
                } );
        }