function checkAll(group){		
	var checks = document.forms['searchform_ad'].elements[group];
	//alert (checks.checked);
	for (i=0; i < checks.length; i++) checks[i].checked = true;
	//checks.checked = true;
	return false;
}

function unCheckAll(group){		
	var checks = document.forms['searchform_ad'].elements[group];
	for (i=0; i < checks.length; i++) checks[i].checked = false;
	//checks.checked = false;
	return false;
}