-- Begin
var total = 0
var play = false
function display(element) {
var now = new Date()
if (!play) {
play = true
startTime = now.getTime()}
if (now.getTime() - startTime > 20000) {
element.checked = !element.checked
return
}
if (element.checked)
total++
else
total--
element.form.num.value = total
}
function restart(form) {
total = 0
play = false
for (var i = 1; i <= 100; ++i) {
form.elements[i].checked = false
}
}
// End -->
Test your skill. How many boxes can you check in 20
seconds?