// Dec 5, 2007	Yu Liu Updated to hide/show Select a Departure time when there is no departure time
if(!ajaxObj){
	var ajaxObj = new XMLHTTP("/include/ajax/mybic_server.php");
}

function getTripTimes( tripID, tripDate, fldName, default_value, doOnChange, tdName){// Modified by Yu Liu
	//Use AJAX to retieve all the trip times for the given tripID on the given tripDate
	if(document.getElementById('alternateTripsList')) {
		document.getElementById('alternateTripsList').style.height='1px';
		document.getElementById('alternateTripsList').style.overflow="hidden";
		document.getElementById('alternateTripsList').style.visibility = "hidden";
	}
	
	document.getElementById('dateinfo').style.visibility = "visible";
	
	ajaxObj.method="POST";
	dateFld=findSelectionField(fldName);
	//Try to reset the form
	//if(resetForm) resetForm(dateFld.form.name);
	dateFld.options[0] = new Option('Loading..', '1');
	//w= document.getElementById(tdName);
	//w.style.visibility = 'hidden';
	ajaxObj.call("action=getTripTimes_helper&tripID="+encodeURIComponent(tripID)+"&trip_date="+encodeURIComponent(tripDate)+"&fld_name="+encodeURIComponent(fldName)+"&tdName="+encodeURIComponent(tdName)+"&default_value="+encodeURIComponent(default_value)+"&doOnChange="+doOnChange, displayTripTimes);
	
}

function MM_findObj(n, d) 
{ //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function findSelectionField(fldName){
	x=MM_findObj(fldName);
	if(x==null) x=MM_findObj(fldName+'[]');
	return x;
}


function setTripTimeOptionsFromArray(x, ListArr, default_value, doOnChange){
	//Get destination field
	//x=findSelectionField(destFld);
	//default_index=3;
//	alert(default_value);
	if (x!=null){
		x.options.length = 0;
		for(key in ListArr){
			y=x.options.length;
			x.options[y] = new Option(ListArr[key], key);
			
			
			if(default_value==key){ 
				x.options[y].selected=true;
				//As we're setting a default value, run the onchange if present
				if(doOnChange==1 && x.onchange) x.onchange();
			};
			
		}
	};
	return true;
}


function displayTripTimes(resp){
	//Use the result to populate the form element 'trip_time' SELECT field
	//document.getElementById('trip_time').innerHTML = resp;
	//alert(JSON.stringify(resp));
	if((time_fld=findSelectionField(resp['fld_name']))!=null){
			for(key in resp['data'])// Added by Yu Liu
			{	
						if(resp['data'][key] == 'All Day')
						{
							z= document.getElementById(resp['tdName']);
							w= document.getElementById(resp['fld_name']);
							if(w!=null) w.style.visibility = 'hidden';	
							if(z!=null) z.style.visibility = 'hidden';
						}
						else
						{
							z= document.getElementById(resp['tdName']);
							w= document.getElementById(resp['fld_name']);
							if(w!=null) w.style.visibility = 'visible';		
							if(z!=null) z.style.visibility = 'visible';
						}
			}
			
		setTripTimeOptionsFromArray(time_fld, resp['data'], resp['default_value'], resp['doOnChange']);
	}
	if(document.getElementById('invLoad') != null)
		document.getElementById('invLoad').style.visibility = 'hidden';
	
}