function clearRadioButtonList(strField) {
	var blnStop = false;
	var i = 0;

	while (blnStop == false) {
		if (document.getElementById(strField + "_"  + i)) {
			document.getElementById(strField +  "_" + i).checked = false;
			i++;
		} else {
			blnStop = true;
		}
	}
}