function CountItems(form, checkboxname)
{
	for (var i=0, item=0; i<form.length; i++) {
		if ( form.elements[i].name == checkboxname ){
			item++;
		}
	}
	return item;
}

function CountSelectItems(form, checkboxname)
{
	for (var i=0, item=0; i<form.length; i++) {
		if ( form.elements[i].name == checkboxname &&
		     form.elements[i].checked == true ){
			item++;
		}
	}
	return item;
}