In M17 i didn't have problems with height='100%' for the 'iframe'-tag. In M18 values in percent will be show us no effect.

i think this is a dup of bug 55874 "%-heights don't work for inline replaced elements in tables"

I don't think that's like bug 55874, because the same effect you have outer of table, too ! If you use CSS2-Attributes you have a <a href="http://212.223.75.2/dev/future/mozilla/solution/iframe.asp">bad solution</a> at least.

reproter - what build id?

Build ID: 2000091312 Comment: Ok, nevertheless it's an unimportant bug for me, because i have so much new things to explore. The greatest is the XSLT-Processor, so just i have problems with MSIE5.5, because there is only XSL implemented and the new MS-XML SDK3 with XSLT is in beta phase without an browser implementation. Just now i must switch browser-specific between XSL and XSLT-schemas. My nightmare is to use to spy the navigator on client or server site ! - How long we must do it such impossible things, yet ?

over to layout for triage.

bug 41656 I think. *** This bug has been marked as a duplicate of 41656 ***

verifying as a duplicate of 41656 '(table/iframe) % height NOT ignored in block with no height specified'