Once a radio button has been selected there is no way for the use to reset the selection and select nothing. This javascript function clears the radio buttons for a radio group with a name of 'radName'.

Note : This does not work if the radio group is an array.

<script language="JavaScript" type="text/javascript">

<!--

function clear_radio(radName){

  

  ' This function clears the radio buttons for the

  ' radio group with a name of radName



  var radio = document.getElementsByName(radName);

  for(var i = 0; i < radio.length; i++){

    if(radio[i].checked === true){

      radio[i].checked = false;

    }

  }

}

//-->