function enable_disable(id,tid,mid) {
var box=document.getElementById(id);
var table=document.getElementById(tid);

var browser=navigator.appName


	if (box.disabled == true) {
	if (browser=="Microsoft Internet Explorer"){
	var displayType = 'block';
	box.disabled = false;
	if (typeof mid != 'undefined') document.getElementById(mid).disabled = false;
	} else {
	var displayType = 'table-row';
	box.disabled = false;
		}	
	} else{
		var displayType = 'none';
		box.disabled = true;
		
	}
		table.style.display=displayType;

}



function enable_disable_date(month_id, day_id, year_id, hour_id, minute_id, nx) {
var month=document.getElementById(month_id);
var day=document.getElementById(day_id);
var year=document.getElementById(year_id);	
var hour=document.getElementById(hour_id);
var minute=document.getElementById(minute_id);
var divas=document.getElementById('durations');
var nx;


if (month.disabled == true && day.disabled == true && year.disabled == true && hour.disabled == true && minute.disabled == true) {
		month.disabled = false;
		day.disabled = false;
		year.disabled = false;
		hour.disabled = false;
		minute.disabled = false;
		if (nx==1) divas.disabled = true;
		} else {
		if (nx==1) divas.disabled = false;
		month.disabled = true;
		day.disabled = true;
		year.disabled = true;
		hour.disabled = true;
		minute.disabled = true;
	}

}