<html> 
<HEAD> 
<title>z-kutu_doldurmaca</title> 
<SCRIPT LANGUAGE="JavaScript"> 
<!-- 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 --> 
</SCRIPT> 
</HEAD> 
<BODY> 
<CENTER>20 saniyede kaç kutu doldurabilirsiniz? </CENTER> 
<SCRIPT LANGUAGE="JavaScript"> 
<!-- Begin 
document.write("<FORM><CENTER>") 
document.write('<INPUT TYPE="text" VALUE="0" '); 
document.write('NAME="num" SIZE=10 onFocus="this.blur()"><BR>') 
document.write("<HR SIZE=1 WIDTH=40%>") 
for (var i = 0; i < 10; ++i) { 
for (var j = 0; j < 10; ++j) { 
document.write('<INPUT TYPE="checkbox" onClick="display(this)">')} 
document.write("<BR>")} 
document.write("<HR SIZE=1 WIDTH=40%>") 
document.write('<INPUT TYPE="button" VALUE="Yeni" '); 
document.write('onClick="restart(this.form)">') 
document.write("</CENTER></FORM>") 
// End --> 
</SCRIPT> 
</BODY> 
</html>