<script language="JavaScript">
<!--
function radiocheck(){
var frm = document.form
for(var i = 0; i < Frm.location.length; i++){
if(Frm.location[i].checked){
break;
}
}
if(i == Frm.location.length){
alert('체크 하삼.');
return;
}
}
//-->
</script>
<form name="Frm">
<input type="radio" name="location" value="1">1
<input type="radio" name="location" value="2">2
<input type="radio" name="location" value="3">3
<input type="radio" name="location" value="4">4
<input type="radio" name="location" value="5">5
</form>
<input type="button" value="테스트" onClick="radiocheck();"> 
