# <s>lock(target) expects a DOM element, and takes two optional callbacks: successcallback, failurecallback.</s> - <strong>JSilver999</strong>

# <s>lock() should return immediately and call callbacks when lock succeeds or fails</s> - <strong>JSilver999</strong>

# "Mouse lock must succeed only if...the user-agent is the active application of the operating system" - '''johnno'''

# <s>"Mouse lock must succeed only if the target is in the DOM tree"</s> - '''Anachid'''

# <s>"If the target is removed from the DOM tree after mouse lock is entered then mouse lock will be lost."</s> - '''Anachid'''