fx: animate() can now animate any property on a generic object or nat…

…ive wrapper (i.e. window.outerWidth)

src/fx.js

@@ -73,12 +73,10 @@ jQuery.fn.extend({
 		var optall = jQuery.speed(speed, easing, callback);
 
 		return this[ optall.queue === false ? "each" : "queue" ](function(){
-			if ( this.nodeType != 1)
-				return false;
-
+
 			var opt = jQuery.extend({}, optall), p,
-				hidden = jQuery(this).is(":hidden"), self = this;
-
+				hidden = this.nodeType != 1 ? false : jQuery(this).is(":hidden"), self = this;
+	
 			for ( p in prop ) {
 				if ( prop[p] == "hide" && hidden || prop[p] == "show" && !hidden )
 					return opt.complete.call(this);
@@ -271,7 +269,7 @@ jQuery.fx.prototype = {
 
 	// Get the current size
 	cur: function(force){
-		if ( this.elem[this.prop] != null && this.elem.style[this.prop] == null )
+		if ( this.elem[this.prop] != null && (!this.elem.style || this.elem.style[this.prop] == null) )
 			return this.elem[ this.prop ];
 
 		var r = parseFloat(jQuery.css(this.elem, this.prop, force));
@@ -421,7 +419,7 @@ jQuery.extend( jQuery.fx, {
 		},
 
 		_default: function(fx){
-			fx.elem.style[ fx.prop ] = fx.now + fx.unit;
+			( fx.elem.style && ( fx.elem.style[ fx.prop ] = fx.now + fx.unit ) ) || ( fx.elem[ fx.prop ] = fx.now );
 		}
 	}
 });