Fixed #2037 where Opera would mis-state the value of 'display' after an...

Fixed #2037 where Opera would mis-state the value of 'display' after an innerHTML was done in some cases.

src/core.js

@@ -816,6 +816,12 @@ jQuery.extend({
 				"1" :
 				ret;
 		}
+		// Opera sometimes will give the wrong display answer, this fixes it, see #2037
+		if ( jQuery.browser.opera && name == "display" ) {
+			var save = elem.style.display;
+			elem.style.display = "block";
+			elem.style.display = save;
+		}
 		
 		// Make sure we're using the right name for getting the float value
 		if ( name.match( /float/i ) )

test/index.html

@@ -172,6 +172,9 @@ Z</textarea>
 				</div>
 			</form>
 			<div id="nonnodes"><span>hi</span> there <!-- mon ami --></div>
+			<div id="t2037">
+				<div><div class="hidden">hidden</div></div>
+			</div>
 		</div>
 	</div>
 	</dl>

test/unit/core.js

@@ -420,7 +420,7 @@ test("css(String|Hash)", function() {
 });
 
 test("css(String, Object)", function() {
-	expect(20);
+	expect(21);
 	ok( $('#foo').is(':visible'), 'Modifying CSS display: Assert element is visible');
 	$('#foo').css('display', 'none');
 	ok( !$('#foo').is(':visible'), 'Modified CSS display: Assert element is hidden');
@@ -454,6 +454,10 @@ test("css(String, Object)", function() {
 	var j = $("#nonnodes").contents();
 	j.css("padding-left", "1px");
 	equals( j.css("padding-left"), "1px", "Check node,textnode,comment css works" );
+
+	// opera sometimes doesn't update 'display' correctly, see #2037
+	$("#t2037")[0].innerHTML = $("#t2037")[0].innerHTML
+	equals( $("#t2037 .hidden").css("display"), "none", "Make sure browser thinks it is hidden" );
 });
 
 test("jQuery.css(elem, 'height') doesn't clear radio buttons (bug #1095)", function () {
@@ -1368,4 +1372,4 @@ test("contents()", function() {
 	var c = $("#nonnodes").contents().contents();
 	equals( c.length, 1, "Check node,textnode,comment contents is just one" );
 	equals( c[0].nodeValue, "hi", "Check node,textnode,comment contents is just the one from span" );
-});
+});
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