Fix #3838, $(document).height() incorrect in IE6

May still be broken in Netscape Navigator 4.

1 files changed, 9 insertions, 1 deletions

diff --git a/src/dimensions.js b/src/dimensions.js
index 8069676eb..64da9f4f2 100644
--- a/src/dimensions.js
+++ b/src/dimensions.js
@@ -42,8 +42,16 @@ jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
 			if ( elem.nodeType === 9 ) {
 				// Either scroll[Width/Height] or offset[Width/Height], whichever is greater
 				doc = elem.documentElement;
+
+				// when a window > document, IE6 reports a offset[Width/Height] > client[Width/Height]
+				// so we can't use max, as it'll choose the incorrect offset[Width/Height]
+				// instead we use the correct client[Width/Height]
+				// support:IE6
+				if ( doc[ clientProp ] >= doc[ scrollProp ] ) {
+					return doc[ clientProp ];
+				}
+
 				return Math.max(
-					doc[ clientProp ],
 					elem.body[ scrollProp ], doc[ scrollProp ],
 					elem.body[ offsetProp ], doc[ offsetProp ]
 				);