Added a fix and test for bug #978 (Appending elements into an IFrame, in IE).

build/test/index.html

@@ -79,6 +79,7 @@
 			</object>
 		</form>
 		<b id="floatTest">Float test.</b>
+		<iframe id="iframe"></iframe>
 	</div>
 	</dl>
 	

src/jquery/coreTest.js

@@ -316,7 +316,7 @@ test("wrap(String|Element)", function() {
 });
 
 test("append(String|Element|Array<Element>|jQuery)", function() {
-	expect(11);
+	expect(12);
 	var defaultText = 'Try them out:'
 	var result = $('#first').append('<b>buga</b>');
 	ok( result.text() == defaultText + 'buga', 'Check if text appending works' );
@@ -354,6 +354,16 @@ test("append(String|Element|Array&lt;Element&gt;|jQuery)", function() {
 	$("#sap").append(document.getElementById('form'));
 	ok( $("#sap>form").size() == 1, "Check for appending a form" );  // Bug #910
 
+	reset();
+	var pass = true;
+	try {
+		$( $("iframe")[0].contentWindow.document.body ).append("<div>test</div>");
+	} catch(e) {
+		pass = false;
+	}
+
+	ok( pass, "Test for appending a DOM node to the contents of an IFrame" );
+	
 });
 
 test("appendTo(String|Element|Array&lt;Element&gt;|jQuery)", function() {

src/jquery/jquery.js

@@ -614,10 +614,13 @@ jQuery.fn = jQuery.prototype = {
 	 */
 	wrap: function() {
 		// The elements to wrap the target around
-		var a = jQuery.clean(arguments);
+		var a, args = arguments;
 
 		// Wrap each of the matched elements individually
 		return this.each(function(){
+			if ( !a )
+				a = jQuery.clean(args, this.ownerDocument);
+
 			// Clone the structure that we're using to wrap
 			var b = a[0].cloneNode(true);
 
@@ -1121,12 +1124,15 @@ jQuery.fn = jQuery.prototype = {
 	 * @cat Core
 	 */
 	domManip: function(args, table, dir, fn){
-		var clone = this.length > 1; 
+		var clone = this.length > 1, a; 
-		var a = jQuery.clean(args);
-		if ( dir < 0 )
-			a.reverse();
 
 		return this.each(function(){
+			if ( !a ) {
+				a = jQuery.clean(args, this.ownerDocument);
+				if ( dir < 0 )
+					a.reverse();
+			}
+
 			var obj = this;
 
 			if ( table && jQuery.nodeName(this, "table") && jQuery.nodeName(a[0], "tr") )
@@ -1440,8 +1446,9 @@ jQuery.extend({
 		return ret;
 	},
 	
-	clean: function(a) {
+	clean: function(a, doc) {
 		var r = [];
+		doc = doc || document;
 
 		jQuery.each( a, function(i,arg){
 			if ( !arg ) return;
@@ -1452,7 +1459,7 @@ jQuery.extend({
 			 // Convert html string into DOM nodes
 			if ( typeof arg == "string" ) {
 				// Trim whitespace, otherwise indexOf won't work as expected
-				var s = jQuery.trim(arg), div = document.createElement("div"), tb = [];
+				var s = jQuery.trim(arg), div = doc.createElement("div"), tb = [];
 
 				var wrap =
 					 // option or optgroup

src/selector/selectorTest.js

@@ -144,8 +144,8 @@ test("expressions - basic xpath", function() {
 	t( "Attribute Exists", "//a[@title]", ["google"] );
 	t( "Attribute Equals", "//a[@rel='bookmark']", ["simon1"] );
 	t( "Parent Axis", "//p/..", ["main","foo"] );
-	t( "Sibling Axis", "//p/../", ["firstp","ap","foo","first","firstUL","empty","form","floatTest","sndp","en","sap"] );
+	t( "Sibling Axis", "//p/../", ["firstp","ap","foo","first","firstUL","empty","form","floatTest","iframe","sndp","en","sap"] );
-	t( "Sibling Axis", "//p/../*", ["firstp","ap","foo","first","firstUL","empty","form","floatTest","sndp","en","sap"] );
+	t( "Sibling Axis", "//p/../*", ["firstp","ap","foo","first","firstUL","empty","form","floatTest","iframe","sndp","en","sap"] );
 	t( "Has Children", "//p[a]", ["firstp","ap","en","sap"] );
 	
 	$("#foo").each(function() {