function bound(obj,flag) {
	var len = Number(obj.length);
	for(var i=0;i<len;i++) {
		if (obj.elements[i].type == "checkbox")	
			if (obj.elements[i].id == "chk_section")
				obj.elements[i].disabled = flag;
	}
}

function enableThisDay(obj,flag) {
	obj.fromday.disabled = flag;
	obj.frommonth.disabled = flag;
	obj.fromyear.disabled = flag;
}

function enablePeriod(obj,flag) {
	if (obj.rangefromday)
	{
		obj.rangefromday.disabled = flag;
		obj.rangefrommonth.disabled = flag;
		obj.rangefromyear.disabled = flag;
	
		obj.rangetoday.disabled = flag;
		obj.rangetomonth.disabled = flag;
		obj.rangetoyear.disabled = flag;
	}
}