yeah, it wouldn't pick up the rclass - was just returning undefined for it, so everything else was failing.
it appears to be almost working now - the rows show, but it is leaving behind blank rows after re-hiding.
However Windows is fucked and I've no idea how much of it not working is down to Windows being shit.
Going to go have some lunch and hopefully this bloody OS will have sorted itself out by the time I get back.
If you really want to pass the target-rowspan through a tag, maybe you could pass it through something valid where it won't do anything, like 'align' or maybe 'href' or something?
Bah, wasn't calculating properly so I did need to use another attribute to pass it through with.
Also, firefox requires display='table-row', but IE requires display='block', so I've got to do a browser if thing. :@
Other than that, it's all working... hopefully it stays like that when I plug all these changes back into the original code.