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Looks like he coded those by hand dude. I don't know if iWeb can take javascript.
 
The best way would probably be to just add the Lightbox2 code in by hand by opening up the html file in a plain text editor.
 
lol what code exactly am I putting in? forgive me cus I don't know what I'm doing. If someone could help up to the point where I can add the images that would be wonderful 😉.
 
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