Remove unnecessary background setting in support now that we have the div reversion. Test added.

src/support.js

@@ -147,9 +147,7 @@ jQuery.support = (function() {
 		width: 0,
 		height: 0,
 		border: 0,
-		margin: 0,
-		// Set background to avoid IE crashes when removing (#9028)
-		background: "none"
+		margin: 0
 	};
 	if ( body ) {
 		jQuery.extend( testElementStyle, {

test/data/testsuite.css

@@ -117,3 +117,7 @@ v\:oval { behavior:url(#default#VML); display:inline-block; }
 tt { display: none; }
 sup { display: none; }
 dfn { display: none; }
+
+/* #9239 Attach a background to the body( avoid crashes in removing the test element in support ) */
+body { background: url(http://www.ctemploymentlawblog.com/test.jpg) no-repeat -1000px 0; }
+