Ie_bugs-cheatsheets速查表
IE8: 'change' event
The 'change' event doesn't always fire. Not for checkboxes, radios, multi-select lists. Use the click handler instead.
IE8: label with input
Clicking label with input inside doesn't focus the input.
IE8: Opacity propagation
An element's 'opacity' value isn't propagated to its positioned descendants.