Here are simple instructions for adding a static image or watermark in a fixed position on your web page. The image remains in the same position, notice the icon on the right hand side, while the page scrolls. I have used it here for my Facebook link but you can as many images as you want, You could also use a transparent 32bit .png image.
Change the top and left-margin values to suit your page layout.
This is assuming you are using a css layout with a fixed width using the #wrapper or similar tag that sets the width of your page layout.
You should now be able to add the staitc images in the position of your choice. Pleas Note: that this method is different to using a Background Image.