Added support for .contents(). Returns ALL child nodes for an element…

… - except for on an IFrame, then it returns the IFrame's document. This fixes #1024.

src/jquery/coreTest.js

@@ -996,3 +996,10 @@ test("map()", function() {
 		"Single Map"
 	);
 });
+
+test("contents()", function() {
+	expect(3);
+	equals( $("#ap").contents().length, 9, "Check element contents" );
+	ok( $("#iframe").contents()[0], "Check existance of IFrame document" );
+	ok( $("#iframe").contents()[0].body, "Check existance of IFrame body" );
+});

src/jquery/jquery.js

@@ -2151,7 +2151,8 @@ jQuery.each({
 	next: "jQuery.nth(a,2,'nextSibling')",
 	prev: "jQuery.nth(a,2,'previousSibling')",
 	siblings: "jQuery.sibling(a.parentNode.firstChild,a)",
-	children: "jQuery.sibling(a.firstChild)"
+	children: "jQuery.sibling(a.firstChild)",
+	contents: "jQuery.nodeName(a,'iframe')?a.contentDocument||a.contentWindow.document:jQuery.makeArray(a.childNodes)"
 }, function(i,n){
 	jQuery.fn[ i ] = function(a) {
 		var ret = jQuery.map(this,n);