function radio_button_checker()
{
// set var radio_choice to false
var radio_choice = false;

// Loop from zero to the one minus the number of radio button selections
for (counter = 0;  counter < document.election_form.candidate_name.length; counter++)
{
// If a radio button has been selected it will return true
// (If not it will return false)
if (document.election_form.candidate_name[counter].checked)
radio_choice = true; 
}

if (!radio_choice)
{
// If there were no selections made display an alert box 
alert("Vennligst velg en av kandidatene.")
return (false);
}
return (true);
}