<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Untitled Document</title>
<script language='JavaScript' src='../jquery-1.4.2.min.js'></script>
<script language='JavaScript'>
/*$(document).ready(function(){
var tds=$("#frmtab1 tr td:has(':radio')");
alert(tds.length);
tds.each(function(i){
alert('i is :'+i);
//alert(tds.get(i) +":radio");
alert($(tds.get(i) +":radio").length);
})
});*/
$(document).ready(function(){
});
function checkmax(obj,num){
if(num>0){
var len=0;
var checktarget="#"+obj+" > td > input:checkbox:checked";
len=$(checktarget).length;
if(len>num){
alert("该题最多只能选择"+num+"项！");
return false;
}
}
return true;
}
function check(){
var tds=$("td[class*='checkIt']");
var flag=false;
tds.each(function(i){
var rads=$(this).children();
//alert("rads.length:"+rads.length);
var count=0;
for(var i=0;i<rads.length;i++){
if(rads[i].checked){
count++;
}
}
if(count==0){
var num=this.className.substring("checkIt".length);
alert('第'+num+'题没有选择，请选择！');
$("#checkIt"+num).focus();
flag=true;
return false;
}
//alert(tds.get(i).innerHTML);
//alert(tds.get(i) +":radio");
//alert($(tds.get(i) +":radio").length);
});
if(flag){
return false;
}
return true;
//return true;
}
</script>
</head>
<body>
<form name="survey" method="post" action="" onsubmit="return check();">
<table id="frmtab1" width="95%" align="center" border="0" cellpadding="0" cellspacing="1" class="list3">
<tr id="frmtab1itr1">
<th align="left" colspan="2" height="30" valign="bottom">
1、您的年龄是？
</th>
</tr>
<input type="hidden" name="radioid1" value="1001">
<tr height="25" id="frmtab1itr2">
<td align="left" colspan="2" class='checkIt1'>
<input type="radio" name="radiobutton1" value="1001">
A、30岁以下
<input type="radio" name="radiobutton1" value="1002">
B、30-40岁
<input type="radi