function changeForm(deliv_id) {
		var deliv_time_id_select = $('select[id^=deliv_time_id]');
		var deliv_date_select = $('select[id^=deliv_date]');
		if (deliv_id == '5') {
			if(deliv_time_id_select){
				deliv_time_id_select.attr("disabled", "disabled");
			}
			if(deliv_date_select){
				deliv_date_select.attr("disabled", "disabled");
			}
			$('div.display_sub').show();
			$('div.display_normal').hide();
		} else {
			$('div.display_normal').show();
			$('div.display_sub').hide();
			if(deliv_time_id_select){
				deliv_time_id_select.removeAttr("disabled");
			}
			if(deliv_date_select){
				deliv_date_select.removeAttr("disabled");
			}
		}
	}