diff --git a/Classes/MGSplitCornersView.h b/Classes/MGSplitCornersView.h
index 0f83c34..e756485 100644
--- a/Classes/MGSplitCornersView.h
+++ b/Classes/MGSplitCornersView.h
@@ -8,6 +8,8 @@
 
 #import <UIKit/UIKit.h>
 
+int floatsAreEqual(float a, float b);
+
 typedef enum _MGCornersPosition {
 	MGCornersPositionLeadingVertical	= 0, // top of screen for a left/right split.
 	MGCornersPositionTrailingVertical	= 1, // bottom of screen for a left/right split.
@@ -17,10 +19,10 @@ typedef enum _MGCornersPosition {
 
 @class MGSplitViewController;
 @interface MGSplitCornersView : UIView {
-	float cornerRadius;
-	MGSplitViewController *splitViewController;
-	MGCornersPosition cornersPosition;
-	UIColor *cornerBackgroundColor;
+	float cornerRadius_;
+	MGSplitViewController *splitViewController_;
+	MGCornersPosition cornersPosition_;
+	UIColor *cornerBackgroundColor_;
 }
 
 @property (nonatomic, assign) float cornerRadius;
diff --git a/Classes/MGSplitCornersView.m b/Classes/MGSplitCornersView.m
index 7bb2913..75f5e70 100644
--- a/Classes/MGSplitCornersView.m
+++ b/Classes/MGSplitCornersView.m
@@ -33,16 +33,14 @@ - (id)initWithFrame:(CGRect)frame
 
 - (void)dealloc
 {
-	self.cornerBackgroundColor = nil;
-	
-	[super dealloc];
+	cornerBackgroundColor_ = nil;
 }
 
 
 #pragma mark -
 #pragma mark Geometry helpers
 
-
+double deg2Rad(double degrees);
 double deg2Rad(double degrees)
 {
 	// Converts degrees to radians.
@@ -50,12 +48,24 @@ - (void)dealloc
 }
 
 
+double rad2Deg(double radians);
 double rad2Deg(double radians)
 {
 	// Converts radians to degrees.
 	return radians * (180 / M_PI);
 }
 
+int floatsAreEqual(float a, float b)
+{
+    int r = 1;
+    if (a - b > 0
+        || a - b < 0)
+    {
+        r = 0;
+    }
+    return r;
+}
+
 
 #pragma mark -
 #pragma mark Drawing
@@ -197,8 +207,9 @@ - (void)drawRect:(CGRect)rect
 
 - (void)setCornerRadius:(float)newRadius
 {
-	if (newRadius != cornerRadius) {
-		cornerRadius = newRadius;
+	if (!floatsAreEqual(newRadius, cornerRadius_))
+    {
+		cornerRadius_ = newRadius;
 		[self setNeedsDisplay];
 	}
 }
@@ -224,9 +235,8 @@ - (void)setCornersPosition:(MGCornersPosition)posn
 
 - (void)setCornerBackgroundColor:(UIColor *)color
 {
-	if (color != cornerBackgroundColor) {
-		[cornerBackgroundColor release];
-		cornerBackgroundColor = [color retain];
+	if (color != cornerBackgroundColor_) {
+		cornerBackgroundColor_ = color;
 		[self setNeedsDisplay];
 	}
 }
diff --git a/Classes/MGSplitDividerView.h b/Classes/MGSplitDividerView.h
index 2d6db15..f79c7d5 100644
--- a/Classes/MGSplitDividerView.h
+++ b/Classes/MGSplitDividerView.h
@@ -10,8 +10,8 @@
 
 @class MGSplitViewController;
 @interface MGSplitDividerView : UIView {
-	MGSplitViewController *splitViewController;
-	BOOL allowsDragging;
+	MGSplitViewController *splitViewController_;
+	BOOL allowsDragging_;
 }
 
 @property (nonatomic, assign) MGSplitViewController *splitViewController; // weak ref.
diff --git a/Classes/MGSplitDividerView.m b/Classes/MGSplitDividerView.m
index b110ba7..3a05e40 100644
--- a/Classes/MGSplitDividerView.m
+++ b/Classes/MGSplitDividerView.m
@@ -30,8 +30,7 @@ - (id)initWithFrame:(CGRect)frame
 
 - (void)dealloc
 {
-	self.splitViewController = nil;
-	[super dealloc];
+	splitViewController_ = nil;
 }
 
 
diff --git a/Classes/MGSplitViewController.m b/Classes/MGSplitViewController.m
index 09ffe17..1d1c2fc 100644
--- a/Classes/MGSplitViewController.m
+++ b/Classes/MGSplitViewController.m
@@ -24,7 +24,7 @@
 #define MG_ANIMATION_CHANGE_SUBVIEWS_ORDER		@"ChangeSubviewsOrder"	// Animation ID for internal use.
 
 
-@interface MGSplitViewController (MGPrivateMethods)
+@interface MGSplitViewController ()
 
 - (void)setup;
 - (CGSize)splitViewSizeForOrientation:(UIInterfaceOrientation)theOrientation;
@@ -149,13 +149,6 @@ - (void)dealloc
 {
 	_delegate = nil;
 	[self.view.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
-	[_viewControllers release];
-	[_barButtonItem release];
-	[_hiddenPopoverController release];
-	[_dividerView release];
-	[_cornerViews release];
-	
-	[super dealloc];
 }
 
 
@@ -437,9 +430,7 @@ - (void)layoutSubviewsForInterfaceOrientation:(UIInterfaceOrientation)theOrienta
 		trailingCorners.cornerBackgroundColor = MG_DEFAULT_CORNER_COLOR;
 		trailingCorners.cornerRadius = MG_DEFAULT_CORNER_RADIUS;
 		_cornerViews = [[NSArray alloc] initWithObjects:leadingCorners, trailingCorners, nil];
-		[leadingCorners release];
-		[trailingCorners release];
-		
+
 	} else if ([_cornerViews count] == 2) {
 		leadingCorners = [_cornerViews objectAtIndex:0];
 		trailingCorners = [_cornerViews objectAtIndex:1];
@@ -559,7 +550,6 @@ - (void)reconfigureForMasterInPopover:(BOOL)inPopover
 	
 	if (inPopover && !_hiddenPopoverController && !_barButtonItem) {
 		// Create and configure popover for our masterViewController.
-		[_hiddenPopoverController release];
 		_hiddenPopoverController = nil;
 		[self.masterViewController viewWillDisappear:NO];
 		_hiddenPopoverController = [[UIPopoverController alloc] initWithContentViewController:self.masterViewController];
@@ -585,7 +575,6 @@ - (void)reconfigureForMasterInPopover:(BOOL)inPopover
 		
 		// Remove master from popover and destroy popover, if it exists.
 		[_hiddenPopoverController dismissPopoverAnimated:NO];
-		[_hiddenPopoverController release];
 		_hiddenPopoverController = nil;
 		
 		// Inform delegate that the _barButtonItem will become invalid.
@@ -596,7 +585,6 @@ - (void)reconfigureForMasterInPopover:(BOOL)inPopover
 		}
 		
 		// Destroy _barButtonItem.
-		[_barButtonItem release];
 		_barButtonItem = nil;
 		
 		// Move master view.
@@ -857,7 +845,7 @@ - (void)setSplitPosition:(float)posn
 		// Apply default constraints if delegate doesn't wish to participate.
 		float minPos = MG_MIN_VIEW_WIDTH;
 		float maxPos = ((_vertical) ? fullSize.width : fullSize.height) - (MG_MIN_VIEW_WIDTH + _splitWidth);
-		constrained = (newPosn != _splitPosition && newPosn >= minPos && newPosn <= maxPos);
+		constrained = (!floatsAreEqual(newPosn, _splitPosition) && newPosn >= minPos && newPosn <= maxPos);
 	}
 	
 	if (constrained) {
@@ -900,7 +888,7 @@ - (float)splitWidth
 
 - (void)setSplitWidth:(float)width
 {
-	if (width != _splitWidth && width >= 0) {
+	if (!floatsAreEqual(width, _splitWidth) && width >= 0) {
 		_splitWidth = width;
 		if ([self isShowingMaster]) {
 			[self layoutSubviews];
@@ -911,7 +899,7 @@ - (void)setSplitWidth:(float)width
 
 - (NSArray *)viewControllers
 {
-	return [[_viewControllers copy] autorelease];
+	return [_viewControllers copy];
 }
 
 
@@ -923,7 +911,6 @@ - (void)setViewControllers:(NSArray *)controllers
 				[controller.view removeFromSuperview];
 			}
 		}
-		[_viewControllers release];
 		_viewControllers = [[NSMutableArray alloc] initWithCapacity:2];
 		if (controllers && [controllers count] >= 2) {
 			self.masterViewController = [controllers objectAtIndex:0];
@@ -942,7 +929,7 @@ - (UIViewController *)masterViewController
 	if (_viewControllers && [_viewControllers count] > 0) {
 		NSObject *controller = [_viewControllers objectAtIndex:0];
 		if ([controller isKindOfClass:[UIViewController class]]) {
-			return [[controller retain] autorelease];
+			return (UIViewController *)controller;
 		}
 	}
 	
@@ -984,7 +971,7 @@ - (UIViewController *)detailViewController
 	if (_viewControllers && [_viewControllers count] > 1) {
 		NSObject *controller = [_viewControllers objectAtIndex:1];
 		if ([controller isKindOfClass:[UIViewController class]]) {
-			return [[controller retain] autorelease];
+			return (UIViewController *)controller;
 		}
 	}
 	
@@ -1004,6 +991,7 @@ - (void)setDetailViewController:(UIViewController *)detail
 		if ([_viewControllers objectAtIndex:1] == detail) {
 			changed = NO;
 		} else {
+            [[self detailViewController].view removeFromSuperview];
 			[_viewControllers replaceObjectAtIndex:1 withObject:detail];
 		}
 		
@@ -1019,7 +1007,7 @@ - (void)setDetailViewController:(UIViewController *)detail
 
 - (MGSplitDividerView *)dividerView
 {
-	return [[_dividerView retain] autorelease];
+	return _dividerView;
 }
 
 
@@ -1027,8 +1015,7 @@ - (void)setDividerView:(MGSplitDividerView *)divider
 {
 	if (divider != _dividerView) {
 		[_dividerView removeFromSuperview];
-		[_dividerView release];
-		_dividerView = [divider retain];
+		_dividerView = divider;
 		_dividerView.splitViewController = self;
 		_dividerView.backgroundColor = MG_DEFAULT_CORNER_COLOR;
 		if ([self isShowingMaster]) {
@@ -1073,9 +1060,8 @@ - (void)setDividerStyle:(MGSplitViewDividerStyle)newStyle
 	_dividerStyle = newStyle;
 	
 	// Reconfigure general appearance and behaviour.
-	float cornerRadius;
+	float cornerRadius = MG_DEFAULT_CORNER_RADIUS;
 	if (_dividerStyle == MGSplitViewDividerStyleThin) {
-		cornerRadius = MG_DEFAULT_CORNER_RADIUS;
 		_splitWidth = MG_DEFAULT_SPLIT_WIDTH;
 		self.allowsDraggingDivider = NO;
 		
@@ -1114,7 +1100,7 @@ - (void)setDividerStyle:(MGSplitViewDividerStyle)newStyle animated:(BOOL)animate
 - (NSArray *)cornerViews
 {
 	if (_cornerViews) {
-		return [[_cornerViews retain] autorelease];
+		return _cornerViews;
 	}
 	
 	return nil;