public void ResizeImage(string OriginalFile, string NewFile, int NewWidth, int MaxHeight, bool OnlyResizeIfWider)
{
	System.Drawing.Image FullsizeImage = System.Drawing.Image.FromFile(OriginalFile);

	// Prevent using images internal thumbnail
	FullsizeImage.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipNone);
	FullsizeImage.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipNone);

	if (OnlyResizeIfWider)
	{
		if (FullsizeImage.Width <= NewWidth)
		{
			NewWidth = FullsizeImage.Width;
		}
	}

	int NewHeight = FullsizeImage.Height * NewWidth / FullsizeImage.Width;
	if (NewHeight > MaxHeight)
	{
		// Resize with height instead
		NewWidth = FullsizeImage.Width * MaxHeight / FullsizeImage.Height;
		NewHeight = MaxHeight;
	}

	System.Drawing.Image NewImage = FullsizeImage.GetThumbnailImage(NewWidth, NewHeight, null, IntPtr.Zero);

	// Clear handle to original file so that we can overwrite it if necessary
	FullsizeImage.Dispose();

	// Save resized picture
	NewImage.Save(NewFile);
}

    ; This returns only the maximum value out of context maximum-of returns the series
    ; at the position of the maximum value found.
    max-of: func [series [series!]] [attempt [first maximum-of series]]