[bot87]

примитивно ,но

<fieldset>
<label for="one1" >checked radio</label>
<input type="radio" name="radio1" id="one1" /> 
<label for="one2" >checked radio</label>
<input type="radio" name="radio1" id="one2" /> 
</fieldset>
<fieldset>
<label for="one3" >checked radio</label>
<input type="radio" name="radio2" id="one3" /> 
<label for="one4" >checked radio</label>
<input type="radio" name="radio2" id="one4" /> 
</fieldset>
<fieldset>
<label for="one5" >checked radio</label>
<input type="radio" name="radio3" id="one5" /> 
<label for="one6" >checked radio</label>
<input type="radio" name="radio3" id="one6" /> 
</fieldset>

<fieldset>
<label for="one7" >выбрать первый флажок во всх формах</label>
<input type="radio" name="radio4" id="one7" /> 
<label for="one8" >выбрать второй флажок во всх формах</label>
<input type="radio" name="radio4" id="one8" /> 
</fieldset>

<script>
function fn1(){
	document.getElementsByTagName('fieldset')[0].getElementsByTagName('input')[0].checked=true;
	document.getElementsByTagName('fieldset')[1].getElementsByTagName('input')[0].checked=true;
	document.getElementsByTagName('fieldset')[2].getElementsByTagName('input')[0].checked=true;
	}
	function fn2(){
	document.getElementsByTagName('fieldset')[0].getElementsByTagName('input')[1].checked=true;
	document.getElementsByTagName('fieldset')[1].getElementsByTagName('input')[1].checked=true;
	document.getElementsByTagName('fieldset')[2].getElementsByTagName('input')[1].checked=true;
	}
document.getElementById('one7').addEventListener('click',fn1,false)
document.getElementById('one8').addEventListener('click',fn2,false)
</script>