The lack of Doctype in the app iframe means Internet Explorer 6 and 7 (among other browsers as well) triggers into Quirks Mode, so they do not follow the standards. This turns into Explorer and Firefox rendering different things for the same HTML and CSS code. The Doctype instruction needs to be on the...

My development app(s) appeared to be working fine until this afternoon when I noticed parts of it had stopped working. I could no longer click on some buttons or move my scroller - those situated top left of the canvas - other bits were OK - and if I hovered over to the right it appears to trigger the...