<script type="application/javascript">
function selectOnlyOne(current_clicked) {
	//alert(current_clicked);
	var a = document.getElementById(current_clicked).value;
	alert(a);
    if(a=='ac-1'){
		document.getElementById('ac-3').checked=false;
		}else if(a=='ac-3'){
			document.getElementById('ac-1').checked=false;
			}
}

</script>