Fixed width/height animations don't lapse back to auto. There's no longer a...

Fixed width/height animations don't lapse back to auto. There's no longer a flicker for fixed sized items. The overflow for items is no longer tampered with, if it doesn't have to be. .cur() is used for all animations in place of .max(), with much better results.

fx/fx.js

@@ -87,7 +87,7 @@ jQuery.fn.extend({
 				if ( prop[p].constructor == Number )
 					e.custom( e.cur(), prop[p] );
 				else
-					e[ prop[p] ]();
+					e[ prop[p] ]( prop );
 			}
 		});
 	},
@@ -121,12 +121,20 @@ jQuery.fn.extend({
 jQuery.extend({
 
 	setAuto: function(e,p) {
+		if ( e.notAuto ) return;
+
+		if ( p == "height" && e.scrollHeight != parseInt(jQuery.curCSS(e,p)) ) return;
+		if ( p == "width" && e.scrollWidth != parseInt(jQuery.curCSS(e,p)) ) return;
+
 		// Remember the original height
 		var a = e.style[p];
 
 		// Figure out the size of the height right now
 		var o = jQuery.curCSS(e,p,1);
 
+		if ( p == "height" && e.scrollHeight != o ||
+			p == "width" && e.scrollWidth != o ) return;
+
 		// Set the height to auto
 		e.style[p] = e.currentStyle ? "" : "auto";
 
@@ -134,7 +142,10 @@ jQuery.extend({
 		var n = jQuery.curCSS(e,p,1);
 
 		// Revert back to the original size
-		if ( o != n && n != "auto" ) e.style[p] = a;
+		if ( o != n && n != "auto" ) {
+			e.style[p] = a;
+			e.notAuto = true;
+		}
 	},
 	
 	speed: function(s,o,i) {
@@ -210,6 +221,7 @@ jQuery.extend({
 			// My hate for IE will never die
 			} else if ( parseInt(z.now) )
 				y[prop] = parseInt(z.now) + "px";
+			y.display = "block";
 		};
 	
 		// Figure out the maximum number to run to
@@ -234,21 +246,17 @@ jQuery.extend({
 		};
 	
 		// Simple 'show' function
-		z.show = function(){
+		z.show = function( p ){
 			if ( !z.el.orig ) z.el.orig = {};
 
 			// Remember where we started, so that we can go back to it later
 			z.el.orig[prop] = this.cur();
 
-			if ( !y[prop] ) z.o.auto = true;
-
-			z.custom(0,z.max());
+			z.custom( 0, z.el.orig[prop] );
 
 			// Stupid IE, look what you made me do
 			if ( prop != "opacity" )
 				y[prop] = "1px";
-
-			y.display = "block";
 		};
 	
 		// Simple 'hide' function
@@ -269,10 +277,12 @@ jQuery.extend({
 			y.zoom = "1";
 	
 		// Remember  the overflow of the element
-		z.oldOverflow = y.overflow;
+		if ( !z.el.oldOverlay )
+			z.el.oldOverflow = jQuery.css( z.el, "overflow" );
 	
 		// Make sure that nothing sneaks out
-		y.overflow = "hidden";
+		if ( z.el.oldOverlay == "visible" )
+			y.overflow = "hidden";
 	
 		// Each step of an animation
 		z.step = function(firstNum, lastNum){
@@ -290,7 +300,7 @@ jQuery.extend({
 				if ( z.o.hide ) y.display = 'none';
 	
 				// Reset the overflow
-				y.overflow = z.oldOverflow;
+				y.overflow = z.el.oldOverflow;
 
 				// If a callback was provided, execute it
 				if( z.o.complete && z.o.complete.constructor == Function )