Debugging Javascript in Firefox

I’ve recently been trying to make some of my scripts work with Firefox 1.5 (from IE) and I was looking for some debugging help to set me on the right track. I found this tool which seems to work very well: http://getahead.ltd.uk/ajax/venkman.

It’s an updated version of Venkman fixed to work with Firefox 1.5.

One of the things it helped me find is that whereas in IE if I ask a table cell (TD) for the nextSibling and get the next TD, in Firefox you always seem to get a text node first and then the next TD. Similarly for getting the next and previous rows.

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