function setRadios()
{
	function sumRadios()
	{
		var total = 0, i = 1, oForm = this.form;
		while (radgrp = oForm.elements['Set' + (i++)])
		{
			j = radgrp.length;
			do
				if (radgrp[--j].checked)
				{
					total += Number(radgrp[j].value);
					break;
				}
			while (j);
		}
		oForm.elements.total.value = total.toFixed(0);
	}
	
	var i = 0, input, inputs = document.getElementById('f1').getElementsByTagName('input');
	while (input = inputs.item(i++))
		if (input.name.match(/^Set\d+$/))
			input.onclick = sumRadios;
}

onload = setRadios;