X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fcss.js;h=19c6342d22b853fd087becaec4b373bbb5b16eaa;hb=49cd9c66bf6097ced133971a82fa9bd7b2f73e1a;hp=8a83c6072bd409b0dc65c7f17ff3cebf1afa9f7b;hpb=cf7ddcf79a3d4d455711b67b252b19ae343645b1;p=jquery.git

diff --git a/src/css.js b/src/css.js
index 8a83c60..19c6342 100644
--- a/src/css.js
+++ b/src/css.js
@@ -263,8 +263,9 @@ if ( document.defaultView && document.defaultView.getComputedStyle ) {
 
 if ( document.documentElement.currentStyle ) {
 	currentStyle = function( elem, name ) {
-		var left, rsLeft,
+		var left, 
 			ret = elem.currentStyle && elem.currentStyle[ name ],
+			rsLeft = elem.runtimeStyle && elem.runtimeStyle[ name ],
 			style = elem.style;
 
 		// From the awesome hack by Dean Edwards
@@ -275,16 +276,19 @@ if ( document.documentElement.currentStyle ) {
 		if ( !rnumpx.test( ret ) && rnum.test( ret ) ) {
 			// Remember the original values
 			left = style.left;
-			rsLeft = elem.runtimeStyle.left;
 
 			// Put in the new values to get a computed value out
-			elem.runtimeStyle.left = elem.currentStyle.left;
+			if ( rsLeft ) {
+				elem.runtimeStyle.left = elem.currentStyle.left;
+			}
 			style.left = name === "fontSize" ? "1em" : (ret || 0);
 			ret = style.pixelLeft + "px";
 
 			// Revert the changed values
 			style.left = left;
-			elem.runtimeStyle.left = rsLeft;
+			if ( rsLeft ) {
+				elem.runtimeStyle.left = rsLeft;
+			}
 		}
 
 		return ret === "" ? "auto" : ret;