UIButton Subclass.

- (id)initWithFrame:(CGRect)frame {
    if ((self = [super initWithFrame:frame])) {
        [self setBackgroundImage:[UIImage imageWithContentsOfFile: [[NSBundle mainBundle] 
																	pathForResource:@"TransparentButtonFillN" 
																	ofType:@"png"]] 
						forState:UIControlStateNormal];
    }
    return self;
}

- (CGRect)backgroundRectForBounds:(CGRect)bounds {
	UIImage *imgLeft = [UIImage imageWithContentsOfFile: [[NSBundle mainBundle] 
														  pathForResource:@"TransparentButtonLeftN" 
														  ofType:@"png"]];
	UIImage *imgRight = [UIImage imageWithContentsOfFile: [[NSBundle mainBundle] 
														   pathForResource:@"TransparentButtonRightN" 
														   ofType:@"png"]];
	UIImageView *imgLeftView = [[UIImageView alloc] initWithImage:imgLeft];
	UIImageView *imgRightView = [[UIImageView alloc] initWithImage:imgRight];
	imgLeftView.frame = CGRectMake(0, 0, imgLeft.size.width, imgLeft.size.height);
	imgRightView.frame = CGRectMake(bounds.size.width - imgRight.size.width, 0, imgRight.size.width, imgRight.size.height);
	[self addSubview:imgLeftView];
	[self addSubview:imgRightView];
	
	
	return bounds;
}