diff --git a/src/css.js b/src/css.js
index c5c01eca..9db65996 100644
--- a/src/css.js
+++ b/src/css.js
@@ -9,6 +9,7 @@ var ralpha = /alpha\([^)]*\)/i,
 	rnum = /^-?\d/,
 	rrelNum = /^[+\-]=/,
 	rrelNumFilter = /[^+\-\.\de]+/g,
+	rinputbutton = /input|button/i,
 
 	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
 	cssWidth = [ "Left", "Right" ],
@@ -338,24 +339,45 @@ curCSS = getComputedStyle || currentStyle;
 
 function getWH( elem, name, extra ) {
 	var which = name === "width" ? cssWidth : cssHeight,
-		val = name === "width" ? elem.offsetWidth : elem.offsetHeight;
+		cur = curCSS( elem, name ),
 
-	if ( extra === "border" ) {
-		return val;
+		// We're addressing the way Firefox handles certain inputs and buttons,
+		// offsetWidth/height actually returns a normal width/height
+		boxSizing = rinputbutton.test( elem.nodeName ) &&
+			( curCSS( elem, "-moz-box-sizing" ) === "border-box" ||
+			curCSS( elem, "box-sizing" ) === "border-box" );
+	
+	// IE will return auto if we try to grab a width/height that is not set
+	if ( boxSizing || cur === "auto" ) {
+		cur = name === "width" ? elem.offsetWidth : elem.offsetHeight;
 	}
 
-	jQuery.each( which, function() {
-		if ( !extra ) {
-			val -= parseFloat(jQuery.css( elem, "padding" + this )) || 0;
-		}
+	// Make sure that IE7 returns the correct computed value for display
+	if ( name === "height" ) {
+		elem.offsetHeight;
+	}
+	
+	var val = parseFloat( cur ) || 0;
 
-		if ( extra === "margin" ) {
-			val += parseFloat(jQuery.css( elem, "margin" + this )) || 0;
+	if ( extra ) {
+		for ( var i = 0, len = which.length; i < len ; i++ ) {
+			var dir = which[i];
 
-		} else {
-			val -= parseFloat(jQuery.css( elem, "border" + this + "Width" )) || 0;
+			// outerWidth/height
+			if ( extra === "border" || extra === "margin" ) {
+				val += parseFloat(jQuery.css( elem, "border" + dir + "Width" )) || 0;
+				val += parseFloat(jQuery.css( elem, "padding" + dir )) || 0;
+
+				if ( extra == "margin" ) {
+					val += parseFloat(jQuery.css( elem, "margin" + dir )) || 0;
+				}
+
+			// innerWidth/height
+			} else {
+				val += parseFloat(jQuery.css( elem, "padding" + dir )) || 0;
+			}
 		}
-	});
+	}
 
 	return val;
 }
diff --git a/src/effects.js b/src/effects.js
index d19f8f61..80391d89 100644
--- a/src/effects.js
+++ b/src/effects.js
@@ -1,6 +1,8 @@
 (function( jQuery ) {
 
 var elemdisplay = {},
+	iframe = null,
+	iframeDoc = null,
 	rfxtypes = /^(?:toggle|show|hide)$/,
 	rfxnum = /^([+\-]=)?([\d+.\-]+)([a-z%]*)$/i,
 	timerId,
@@ -17,46 +19,6 @@ var elemdisplay = {},
 	    window.mozRequestAnimationFrame ||
 	    window.oRequestAnimationFrame;
 
-// Animations created synchronously will run synchronously
-function createFxNow() {
-	setTimeout( clearFxNow, 0 );
-	return ( fxNow = jQuery.now() );
-}
-
-function clearFxNow() {
-	fxNow = undefined;
-}
-
-// Try to restore the default display value of an element
-// fails if a display rule has been set for this element, e.g. div { display: inline; }
-function defaultDisplay( nodeName ) {
-	if ( !elemdisplay[ nodeName ] ) {
-		var elem = jQuery("<" + nodeName + ">").appendTo("body"),
-			display = elem.css("display");
-
-		elem.remove();
-
-		if ( display === "none" || display === "" ) {
-			display = "block";
-		}
-
-		elemdisplay[ nodeName ] = display;
-	}
-
-	return elemdisplay[ nodeName ];
-}
-
-// Generate parameters to create a standard animation
-function genFx( type, num ) {
-	var obj = {};
-
-	jQuery.each( fxAttrs.concat.apply([], fxAttrs.slice(0,num)), function() {
-		obj[ this ] = type;
-	});
-
-	return obj;
-}
-
 jQuery.fn.extend({
 	show: function( speed, easing, callback ) {
 		var elem, display;
@@ -166,7 +128,6 @@ jQuery.fn.extend({
 			var opt = jQuery.extend({}, optall),
 				isElement = this.nodeType === 1,
 				hidden = isElement && jQuery(this).is(":hidden"),
-				self = this,
 				name, val, p,
 				easing, display, e,
 				parts, start, end, unit;
@@ -187,10 +148,6 @@ jQuery.fn.extend({
 				val = prop[p];
 
 				if ( val === "hide" && hidden || val === "show" && !hidden ) {
-					return opt.complete.call(self);
-				}
-
-				if ( prop[p] === "hide" && hidden || prop[p] === "show" && !hidden ) {
 					return opt.complete.call(this);
 				}
 
@@ -240,7 +197,7 @@ jQuery.fn.extend({
 			}
 
 			for ( p in prop ) {
-				e = new jQuery.fx( self, opt, p );
+				e = new jQuery.fx( this, opt, p );
 
 				val = prop[p];
 
@@ -257,9 +214,9 @@ jQuery.fn.extend({
 
 						// We need to compute starting value
 						if ( unit !== "px" ) {
-							jQuery.style( self, p, (end || 1) + unit);
+							jQuery.style( this, p, (end || 1) + unit);
 							start = ((end || 1) / e.cur()) * start;
-							jQuery.style( self, p, start + unit);
+							jQuery.style( this, p, start + unit);
 						}
 
 						// If a +=/-= token was provided, we're doing a relative animation
@@ -470,7 +427,8 @@ jQuery.fx.prototype = {
 		var t = fxNow || createFxNow(),
 			done = true,
 			elem = this.elem,
-			options = this.options;
+			options = this.options,
+			i, n;
 
 		if ( gotoEnd || t >= options.duration + this.startTime ) {
 			this.now = this.end;
@@ -479,7 +437,7 @@ jQuery.fx.prototype = {
 
 			options.animatedProperties[ this.prop ] = true;
 
-			for ( var i in options.animatedProperties ) {
+			for ( i in options.animatedProperties ) {
 				if ( options.animatedProperties[i] !== true ) {
 					done = false;
 				}
@@ -517,7 +475,7 @@ jQuery.fx.prototype = {
 			if ( options.duration == Infinity ) {
 				this.now = t;
 			} else {
-				var n = t - this.startTime;
+				n = t - this.startTime;
 
 				this.state = n / options.duration;
 				// Perform the easing function, defaults to swing
@@ -534,11 +492,11 @@ jQuery.fx.prototype = {
 
 jQuery.extend( jQuery.fx, {
 	tick: function() {
-		var timers = jQuery.timers;
-
-		for ( var i = 0; i < timers.length; i++ ) {
+		var timers = jQuery.timers,
+			i = timers.length;
+		while ( i-- ) {
 			if ( !timers[i]() ) {
-				timers.splice(i--, 1);
+				timers.splice(i, 1);
 			}
 		}
 
@@ -584,4 +542,73 @@ if ( jQuery.expr && jQuery.expr.filters ) {
 	};
 }
 
+// Try to restore the default display value of an element
+function defaultDisplay( nodeName ) {
+
+	if ( !elemdisplay[ nodeName ] ) {
+
+		var elem = jQuery( "<" + nodeName + ">" ).appendTo( "body" ),
+			display = elem.css( "display" );
+
+		elem.remove();
+
+		if ( display === "none" || display === "" ) {
+
+			// Get element's real default display by attaching it to a temp iframe
+			// Conritbutions from Louis Remi and Julian Aurbourg
+			// based on recommendation by Louis Remi
+
+			// No iframe to use yet, so create it
+			if ( !iframe ) {
+				iframe = document.createElement( "iframe" );
+				iframe.frameBorder = iframe.width = iframe.height = 0;
+			}
+
+			document.body.appendChild( iframe );
+
+			// Create a cacheable copy of the iframe document on first call.
+			// IE and Opera will allow us to reuse the iframeDoc without re-writing the fake html
+			// document to it, Webkit & Firefox won't allow reusing the iframe document
+			if ( !iframeDoc || !iframe.createElement ) {
+				iframeDoc = ( iframe.contentWindow || iframe.contentDocument ).document;
+				iframeDoc.write( "<!doctype><html><body></body></html>" );
+			}
+
+			elem = iframeDoc.createElement( nodeName );
+
+			iframeDoc.body.appendChild( elem );
+
+			display = jQuery.css( elem, "display" );
+
+			document.body.removeChild( iframe );
+		}
+
+		// Store the correct default display
+		elemdisplay[ nodeName ] = display;
+	}
+
+	return elemdisplay[ nodeName ];
+}
+
+// Animations created synchronously will run synchronously
+function createFxNow() {
+	setTimeout( clearFxNow, 0 );
+	return ( fxNow = jQuery.now() );
+}
+
+function clearFxNow() {
+	fxNow = undefined;
+}
+
+// Generate parameters to create a standard animation
+function genFx( type, num ) {
+	var obj = {};
+
+	jQuery.each( fxAttrs.concat.apply([], fxAttrs.slice(0,num)), function() {
+		obj[ this ] = type;
+	});
+
+	return obj;
+}
+
 })( jQuery );
diff --git a/test/data/testsuite.css b/test/data/testsuite.css
index a9dd97ba..99851eaa 100644
--- a/test/data/testsuite.css
+++ b/test/data/testsuite.css
@@ -111,4 +111,9 @@ div#show-tests * { display: none; }
 #nothiddendivchild.prct { font-size: 150%; }
 
 /* For testing type on vml in IE #7071 */
-v\:oval { behavior:url(#default#VML); display:inline-block; }
\ No newline at end of file
+v\:oval { behavior:url(#default#VML); display:inline-block; }
+
+/* 8099 changes to default styles are read correctly */
+tt { display: none; }
+sup { display: none; }
+dfn { display: none; }
diff --git a/test/unit/dimensions.js b/test/unit/dimensions.js
index 641165f4..7019a288 100644
--- a/test/unit/dimensions.js
+++ b/test/unit/dimensions.js
@@ -222,3 +222,82 @@ test("outerHeight()", function() {
 	div.remove();
 	jQuery.removeData($div[0], "olddisplay", true);
 });
+
+test('width(), outerWidth(), innerWidth(), height(), outerHeight() and innerHeight() with inputs', function(){
+	expect(47);
+
+	var id = 'input-width-test-group';
+	var input_els = 'submit reset button'.split(' ');
+	var html = '<div id="' + id + '" style="width:100px;">';
+	var style = 'width:35px;height:50px;padding:5px;border:1px solid #000;margin:2px;';
+
+	html += '<div id="nothing-set-div">test</div>';
+	html += '<div id="width-div-1" style="' + style + '">something</div>';
+	html += '<button id="width-button-1" style="' + style + '">button</button>';
+	jQuery.each(input_els, function() {
+		html += '<input class="width-input" type="' + this + '" style="' + style + '" />';
+	});
+	html += '</div>';
+
+	jQuery('#main').append(html);
+
+	equals(jQuery('#nothing-set-div').width(), 100, 'Width of unset div takes on parent');
+
+	jQuery('#width-div-1, #width-button-1, .width-input').each(function(){
+
+		// Test widths
+		var w = jQuery(this).width();
+		var outer_w = jQuery(this).outerWidth();
+		var outer_w_margin = jQuery(this).outerWidth(true);
+		var inner_w = jQuery(this).innerWidth();
+		var t = this.tagName.toLowerCase() + ((this.type) ? '[' + this.type + ']' : '');
+
+		equals(w, 35, 'Make sure width() works for ' + t);
+		equals(outer_w, 47, 'Make sure outerWidth() works for ' + t);
+		equals(outer_w_margin, 51, 'Make sure outerWidth(true) works for ' + t);
+		equals(inner_w, 45, 'Make sure innerWidth() works for ' + t);
+
+		// Test heights
+		var h = jQuery(this).height();
+		var outer_h = jQuery(this).outerHeight();
+		var outer_h_margin = jQuery(this).outerHeight(true);
+		var inner_h = jQuery(this).innerHeight();
+
+		equals(h, 50, 'Make sure height() works for ' + t);
+		equals(outer_h, 62, 'Make sure outerHeight() works for ' + t);
+		equals(outer_h_margin, 66, 'Make sure outerHeight(true) works for ' + t);
+		equals(inner_h, 60, 'Make sure innerHeight() works for ' + t);
+
+	});
+
+	var inputsub = jQuery('.width-input').filter('input[type=submit]');
+
+	inputsub.css({
+		width: 10,
+		padding: 0,
+		margin: '3px',
+		border: '1px solid red',
+		height: 15
+	});
+	
+	var w = inputsub.width();
+	equals(w, 10, 'width() works after setting css using .css()');
+
+	var outer_w = inputsub.outerWidth();
+	equals(outer_w, 12, 'outerWidth() works after setting css using .css()');
+
+	var outer_w_margin = inputsub.outerWidth(true);
+	equals(outer_w_margin, 18, 'outerWidth(true) works after setting css using .css()');
+	
+	var h = inputsub.height();
+	equals(h, 15, 'height() works after setting css using .css()');
+	
+	var outer_h = inputsub.outerHeight();
+	equals(outer_h, 17, 'outerHeight() works after setting css using .css()');
+
+	var outer_h_margin = inputsub.outerHeight(true);
+	equals(outer_h_margin, 23, 'outerHeight(true) works after setting css using .css()');
+	
+	jQuery('#' + id).remove();
+
+});
diff --git a/test/unit/effects.js b/test/unit/effects.js
index 4faf6174..8b7cf467 100644
--- a/test/unit/effects.js
+++ b/test/unit/effects.js
@@ -162,6 +162,28 @@ test("Persist correct display value", function() {
 	});
 });
 
+test("show() resolves correct default display #8099", function() {
+	expect(7);
+	var tt8099 = jQuery("<tt/>").appendTo("body"), 
+			dfn8099 = jQuery("<dfn/>", { html: "foo"}).appendTo("body");
+
+	equals( tt8099.css("display"), "none", "default display override for all tt" );
+	equals( tt8099.show().css("display"), "inline", "Correctly resolves display:inline" );
+
+	equals( jQuery("#foo").hide().show().css("display"), "block", "Correctly resolves display:block after hide/show" );
+
+	equals( tt8099.hide().css("display"), "none", "default display override for all tt" );
+	equals( tt8099.show().css("display"), "inline", "Correctly resolves display:inline" );
+
+	equals( dfn8099.css("display"), "none", "default display override for all dfn" );
+	equals( dfn8099.show().css("display"), "inline", "Correctly resolves display:inline" );
+
+	tt8099.remove();
+	dfn8099.remove();
+
+});
+
+
 test("animate(Hash, Object, Function)", function() {
 	expect(1);
 	stop();