i have a parent page with a bunch of photos. clicking on the first photo will lead to a new child window with a close-up of that photo AND from there you can cycle through all of the other photos from the previous page. Ive got the parent page and the child window page and the photo viewer working fine. What I want to do is to be able to do is have the same photo viewer window open up and display the particular photo that was originally clicked on (right now it always shows the first photo). I figure I should be able to talk to the child window through an 'onclick' and tell the child window to display 'so and so' image first, but I don't know how to communicate to the child window in this fashion...
in short, how can i change the image of a child window from the parent window?