If image exists, display it, if not show a standard image?
My system has a field which displays an image of a product in a folder. I want to create a means to look in the folder and show the image using the name specified, if not there show a standard image kept in the same folder ('image coming soon' sort of image).
In the past I've used IF EXIST and those types of conditionals but can't seem to tie this one down. Any help?