How to hide a png image

[gercoke]

I was wondering if anyone knew how to call a png image but not show it? I have php code to generate the png image but i only want to call the image through: <img src="C:\png\image\path\name">.
Any help PLEASE!

[zair]

You could either load it behind something else using CSS and the z-index, or perhaps just make it width="1" and height="1" so it will be practically invisible.