form validation - radios

[sashabinkie]

can't figure out why the #&@ this doesn't work:

if (!(frmMan.chkDis.checked))
{
alert("Please indicate a Discipline.");
frmMan.chkDis(0).focus();
return false;
}
else
{
return true;
}

Any help would be greatly appreciated!!

whether the radios are selected or not it performs the if and not the else.