diff --git a/src/overlay/overlay.js b/src/overlay/overlay.js
index 1954251..d53e1a4 100644
--- a/src/overlay/overlay.js
+++ b/src/overlay/overlay.js
@@ -28,7 +28,7 @@
 			effect: 'default',
 			
 			// since 1.2. fixed positioning not supported by IE6
-			fixed: !$.browser.msie || $.browser.version > 6, 
+			fixed: !$('html').hasClass('ie6'), 
 			
 			left: 'center',		
 			load: false, // 1.2
@@ -137,8 +137,8 @@
 				// position & dimensions 
 				var top = conf.top,					
 					 left = conf.left,
-					 oWidth = overlay.outerWidth({margin:true}),
-					 oHeight = overlay.outerHeight({margin:true}); 
+					 oWidth = overlay.outerWidth(true),
+					 oHeight = overlay.outerHeight(true); 
 				
 				if (typeof top == 'string')  {
 					top = top == 'center' ? Math.max((w.height() - oHeight) / 2, 0) : 
diff --git a/src/toolbox/toolbox.expose.js b/src/toolbox/toolbox.expose.js
index 2859e45..43627e1 100644
--- a/src/toolbox/toolbox.expose.js
+++ b/src/toolbox/toolbox.expose.js
@@ -41,7 +41,7 @@
 	function viewport() {
 				
 		// the horror case
-		if ($.browser.msie) {
+		if ($('html').hasClass('oldie')) {
 			
 			// if there are no scrollbars then use window.height
 			var d = $(document).height(), w = $(window).height();
diff --git a/src/tooltip/tooltip.js b/src/tooltip/tooltip.js
index ffe1047..9e5ed9b 100644
--- a/src/tooltip/tooltip.js
+++ b/src/tooltip/tooltip.js
@@ -69,7 +69,7 @@
 		fade: [
 			function(done) {
 				var conf = this.getConf();
-				if (!$.browser.msie || conf.fadeIE) {
+				if (!$('html').hasClass('oldie') || conf.fadeIE) {
 					this.getTip().fadeTo(conf.fadeInSpeed, conf.opacity, done);
 				}
 				else {
@@ -79,7 +79,7 @@
 			},
 			function(done) {
 				var conf = this.getConf();
-				if (!$.browser.msie || conf.fadeIE) {
+				if (!$('html').hasClass('oldie') || conf.fadeIE) {
 					this.getTip().fadeOut(conf.fadeOutSpeed, done);
 				}
 				else {
@@ -100,8 +100,8 @@
 			 left = conf.relative ? trigger.position().left : trigger.offset().left,
 			 pos = conf.position[0];
 
-		top  -= tip.outerHeight() - conf.offset[0];
-		left += trigger.outerWidth() + conf.offset[1];
+		top  -= tip.outerHeight(false) - conf.offset[0];
+		left += trigger.outerWidth(false) + conf.offset[1];
 		
 		// iPad position fix
 		if (/iPad/i.test(navigator.userAgent)) {
@@ -109,14 +109,14 @@
 		}
 		
 		// adjust Y		
-		var height = tip.outerHeight() + trigger.outerHeight();
+		var height = tip.outerHeight(false) + trigger.outerHeight(false);
 		if (pos == 'center') 	{ top += height / 2; }
 		if (pos == 'bottom') 	{ top += height; }
 		
 		
 		// adjust X
 		pos = conf.position[1]; 	
-		var width = tip.outerWidth() + trigger.outerWidth();
+		var width = tip.outerWidth(false) + trigger.outerWidth(false);
 		if (pos == 'center') 	{ left -= width / 2; }
 		if (pos == 'left')   	{ left -= width; }	 
 		
diff --git a/src/tooltip/tooltip.slide.js b/src/tooltip/tooltip.slide.js
index e5aad5c..3af131a 100644
--- a/src/tooltip/tooltip.slide.js
+++ b/src/tooltip/tooltip.slide.js
@@ -21,7 +21,7 @@
 		slideOffset: 10,
 		slideInSpeed: 200,
 		slideOutSpeed: 200, 
-		slideFade: !$.browser.msie
+		slideFade: !$('html').hasClass('oldie')
 	});			
 	
 	// directions for slide effect