For some reason your web browser is not supplying the location of my web page that referred you to this page (http_referer=""), which unfortunately makes it impossible for this script to know the location of the picture that it is supposed to display.
Sorry.
I've tested this script with old and current versions of both Internet Explorer and Netscape, as well as a recent version of Mozilla, so I have no explaination as to why this isn't working for you.