checkbox won't return false

[mal54]

This is the code. When I click on the checkbox it returns an alert but when I click OK the check in the checkbox remains, I want it to return unchecked. can anyone help? with thanks.

function GetSelectedButton(ButtonGroup)
{
for (var x=0; x < ButtonGroup.length; x++)
if (ButtonGroup[x].checked) return x
return 0
}


function Grade1(){
var i = GetSelectedButton(f1.C)
if (f1.C.value == &quot;1&quot {
alert (&quot;'Congratulations' You're correct !!!.&quot
return false
}
else {
alert (&quot;Sorry you're not correct&quot
return (false);
}
}

 

[GUJUm0deL]

Try this:

function GetSelectedButton(ButtonGroup) {
for (var x=0; x < ButtonGroup.length; x++)
if (ButtonGroup[x].checked) return x
return false;
}

function Grade1() {
var i = GetSelectedButton(f1.C)
if (f1.C.value == &quot;1&quot {
alert (&quot;'Congratulations' You're correct !!!.&quot
return false;
}
else {
alert (&quot;Sorry you're not correct&quot
return false;
}
} I have not failed; I merely found 100,000 different ways of not succeding...