First let me say this took me ages to work out how this was going wrong, and that this bug affects both IE6 and IE7. IE is treating the name attribute on forms as the ID attribute, causing the getElementById to return very unexpected results.

I've been looking at the del.icio.us auto text grow functionality recently, and noticed you can achieve a similar effect in CSS, but only for IE. I originally thought this was a bug since it didn't work in Firefox or Safari.

Generally when you say you've done your browser testing it will mostly take place on a PC, and at the very least, it will be IE†. † No matter how much we developers or designers complain that IE isn't standards compliant, and Firefox is the way, the World still prefers IE (at time of writing!). However, being [...]