Thanks. It's commas. I did it the lazy way, and quickly made the page in Dreamweaver. Amazingly enough, Dreamweaver DOESN'T put commas in the clip rectangle coordinates! D'oh!
Rats! Seems it wasn't that. Here's my code:
position:absolute; left:175px; top:100px; width:400px; height:250px; z-index:1; overflow: auto; clip: rect(0px, 400px, 250px, 0px)
Can't understand it! It should
be fine but Netscape 6 refuses to get the clip rectangle right. And this is a really simple test page with one layer in it!