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test.html
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s<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 5.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<head>
<meta name="description" content="" >
<meta name="author" content="Matthew Martin">
<meta name="keywords" content="" >
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta http-equiv="Expires" content="Mon, 26 Jul 1980 05:00:00 GMT">
<meta http-equiv="Expires" content="0">
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="Cache-Control" content="no-cache, must-revalidate, post-check=0, pre-check=0">
<meta http-equiv="Cache-Control" content="max-age=0">
<title>ePI</title>
<script type="text/javascript" language="javascript">
var url = new URL(window.location.href);
var g_endpoint = url.searchParams.get("endpoint");
console.log(g_endpoint);
if(g_endpoint === null)
{
g_endpoint = prompt("Enter endpoint");
}
var g_url = "http://"+g_endpoint+"/x-epi/";
var g_files = [];
var g_schedules = [];
var g_playlists = [];
var g_ws = null;
var g_bOrphaned = false;
var g_show = 'files';
function setElementText(elm, key, jsonObj)
{
if(document.getElementById(elm))
{
if(jsonObj[key] !== undefined)
{
document.getElementById(elm).innerHTML = jsonObj[key];
}
else
{
document.getElementById(elm).innerHTML = "";
}
}
else
{
console.log(elm);
}
}
function clearElementText(elm)
{
document.getElementById(elm).innerHTML = "";
}
function FindResource(uid, resObj)
{
for(var i =0; i < resObj.length; i++)
{
if(resObj[i]["uid"] == uid)
{
return resObj[i];
}
}
return null;
}
function millisecondsToTime(milliseconds)
{
var seconds = Math.floor(milliseconds/1000)%60;
var minutes = Math.floor(milliseconds/(1000*60))%60;
var hours = Math.floor(milliseconds/(1000*3600));
return toString(hours)+":"+toString(minutes)+":"+toString(seconds);
}
function toString(value)
{
if(value == 0)
{
return '00';
}
else if(value < 10)
{
return '0'+value;
}
return value;
}
function ws_connect()
{
console.log("ws_connect: "+ g_endpoint+"/ws");
g_ws = new WebSocket('ws://' + g_endpoint+"/ws");
g_ws.onopen = function(ev) { console.log(ev); };
g_ws.onerror = function(ev) { console.log(ev); };
g_ws.onclose = function(ev) { console.log(ev); alert("Server has closed");};
g_ws.filter = function(jsonObj){};
g_ws.onmessage = function(ev)
{
var jsonObj = JSON.parse(ev.data);
console.log(jsonObj);
if(jsonObj["application"] !== undefined)
{
setElementText("application_start_time", "start_time", jsonObj["application"]);
document.getElementById('application_up_time').innerHTML = millisecondsToTime(jsonObj["application"]["up_time"]*1000);
setElementText("application_version", "version", jsonObj["application"]);
}
if(jsonObj["cpu"] !== undefined)
{
setElementText("cpu_overall", "cpu", jsonObj["cpu"]);
setElementText("cpu_cpu0", "cpu0", jsonObj["cpu"]);
setElementText("cpu_cpu1", "cpu1", jsonObj["cpu"]);
setElementText("cpu_cpu2", "cpu2", jsonObj["cpu"]);
setElementText("cpu_cpu3", "cpu3", jsonObj["cpu"]);
}
if(jsonObj["disk"] !== undefined)
{
if(jsonObj["disk"]["bytes"] !== undefined)
{
setElementText("disk_bytes_available", "available", jsonObj["disk"]["bytes"]);
setElementText("disk_bytes_total", "total", jsonObj["disk"]["bytes"]);
}
if(jsonObj["disk"]["inodes"] !== undefined)
{
setElementText("disk_inodes_available", "available", jsonObj["disk"]["inodes"]);
setElementText("disk_inodes_total", "total", jsonObj["disk"]["inodes"]);
}
}
if(jsonObj["system"] !== undefined)
{
document.getElementById('system_uptime').innerHTML = millisecondsToTime(jsonObj["system"]["uptime"]*1000);
setElementText("system_ram_free", "free", jsonObj["system"]["ram"]);
setElementText("system_load", "1", jsonObj["system"]["loads"]);
}
if(jsonObj["temperature"] !== undefined)
{
setElementText("system_temp", "cpu", jsonObj["temperature"]);
}
console.log(jsonObj);
if(jsonObj["player"] !== undefined)
{
updateStatus(jsonObj);
}
if(jsonObj["exit"] !== undefined)
{
if(jsonObj["exit"]["code"] !== undefined)
{
setElementText("exit_code", "code", jsonObj["exit"]);
}
else
{
clearElementText("exit_code");
}
if(jsonObj["exit"]["signal"] !== undefined)
{
setElementText("exit_signal", "code", jsonObj["exit"]["signal"]);
setElementText("exit_signal_description", "description", jsonObj["exit"]["signal"]);
}
else
{
clearElementText("exit_signal");
clearElementText("exit_signal_description");
}
}
else
{
clearElementText("exit_signal");
clearElementText("exit_signal_description");
clearElementText("exit_code");
}
}
}
function updateStatus(jsonObj)
{
document.getElementById("player").innerHTML = jsonObj["player"];
if(jsonObj["locked"] == false)
{
document.getElementById("lock").innerHTML = "Lock System";
}
else
{
document.getElementById("lock").innerHTML = "Unlock System";
}
if(jsonObj["player"] == "Stopped" || jsonObj["status"] === undefined)
{
document.getElementById("stop").style.visibility = "hidden";
clearElementText("playing_uid");
clearElementText("playing_label");
clearElementText("playing_started_at");
clearElementText("playing_length");
clearElementText("playing_loop");
clearElementText("playing_time");
clearElementText("resampler");
clearElementText("status_action");
clearElementText("status_time");
clearElementText("status_type");
clearElementText("status_label");
}
else
{
g_bOrphaned = (jsonObj["player"] == "Orphaned");
document.getElementById("stop").style.visibility = "visible";
if(jsonObj["resource"] !== undefined)
{
setElementText("status_type", "type", jsonObj["resource"]);
setElementText("status_label", "label", jsonObj["resource"]);
}
else
{
clearElementText("status_type");
clearElementText("status_label");
}
jsonObj = jsonObj["status"];
setElementText("status_action", "action", jsonObj);
setElementText("status_time", "time", jsonObj);
if(jsonObj["playing"] !== undefined)
{
setElementText("playing_uid", "uid", jsonObj["playing"]);
var resObj = FindResource(jsonObj["playing"]["uid"], g_files);
if(resObj !== null)
{
document.getElementById("playing_label").innerHTML = resObj["label"];
}
setElementText("playing_started_at", "started_at", jsonObj["playing"]);
setElementText("playing_loop", "loop", jsonObj["playing"]);
document.getElementById("playing_length").innerHTML = millisecondsToTime(jsonObj["playing"]["length"]);
document.getElementById("playing_time").innerHTML = millisecondsToTime(jsonObj["playing"]["time"]);
if(jsonObj["playing"]["resampler"] == true)
{
document.getElementById("resampler").innerHTML = "On";
}
else
{
document.getElementById("resampler").innerHTML = "Off";
}
}
}
}
function startup()
{
next(0);
}
function next(index, resObj)
{
console.log("next("+index+")");
switch(index)
{
case 0:
getConfig(index);
break;
case 1:
getStatus(index);
case 2:
getResource("files","div_files", index);
break;
case 3:
g_files = resObj;
getResource("schedules","div_schedules", index);
break;
case 4:
g_schedules = resObj;
getResource("playlists","div_playlists", index);
break;
case 5:
g_playlists = resObj;
if(g_ws === null)
{
ws_connect();
}
if(g_details !== null)
{
showdetails();
}
}
}
function getStatus(index)
{
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function()
{
if(this.readyState == 4)
{
var resObj = JSON.parse(this.responseText);
if(resObj !== null)
{
updateStatus(resObj);
}
next(index+1);
}
}
ajax.open("GET", g_url+"status",true);
ajax.send();
}
function getConfig(index)
{
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function()
{
if(this.readyState == 4)
{
var resObj = JSON.parse(this.responseText);
if(resObj !== null)
{
document.title = resObj["server"]["hostname"];
document.getElementById("hostname").innerHTML = resObj["server"]["hostname"];
}
next(index+1);
}
}
ajax.open("GET", g_url+"config",true);
ajax.send();
}
function getResource(endpoint, div, index)
{
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function()
{
console.log(this.readyState);
if(this.readyState == 4)
{
console.log(this.responseText);
var resObj = JSON.parse(this.responseText);
if(resObj !== null)
{
//create a list sorted by label...
resObj.sort(function(a,b) {
var x = a.label.toLowerCase();
var y = b.label.toLowerCase();
if(x < y) return -1;
if(y < x) return 1;
return 0;
});
}
listResources(resObj, div, endpoint);
next(index+1, resObj);
}
}
ajax.open("GET", g_url+endpoint,true);
ajax.send();
}
function listResources(resObj, elm, type)
{
var div = document.getElementById(elm);
if(div === null)
{
return;
}
while(div.firstChild)
{
div.removeChild(div.firstChild);
}
var div_label = document.createElement('div');
div_label.innerHTML = "Label";
div_label.className = "grid_title";
var div_action = document.createElement('div');
div_action.innerHTML = "Action";
div_action.className = "grid_title";
div.appendChild(div_label);
div.appendChild(div_action);
if(resObj === null)
return;
for(var i = 0; i < resObj.length; i++)
{
div_label = document.createElement('div');
div_label.innerHTML = resObj[i]["label"];
div_label.className = "grid_resource";
div_label.id = "label_"+type+"_"+resObj[i]["uid"];
div_label.addEventListener('click',details, false);
div_action = document.createElement('div');
div_action.className = "grid_label";
var button_play = document.createElement('button');
button_play.innerHTML = "Play";
button_play.id = "play_"+type+"_"+resObj[i]["uid"];
button_play.addEventListener('click',play, false);
div_action.appendChild(button_play);
div.appendChild(div_label);
div.appendChild(div_action);
}
}
function postSchedule()
{
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function()
{
if(this.readyState == 4)
{
var jsonObj = JSON.parse(this.responseText);
console.log(jsonObj);
}
}
var schedule = { "label" : "usher2", "description" : "Usher", "files" : [ { "uid" : "1b77ce42-fa03-3ab8-8570-da65c8909a9d", "times_to_play" : 1, "cron" : "0 52 15 * * ? *"}, { "uid" : "3745251b-dce9-30c8-bc9c-17678ed2c001", "times_to_play" : 1, "cron" : "0 54 15 * * ? *" },{ "uid" : "9da24e0a-e14c-3cb0-91df-26af522c3f22", "times_to_play" : 1, "cron" : "0 55 15 * * ? *" }] };
console.log(schedule);
ajax.open("POST", g_url+"schedules",true);
ajax.setRequestHeader("Content-type", "application/json");
ajax.send(JSON.stringify(schedule));
}
function upload_file()
{
if(document.getElementById('new_file_label').value == '')
{
alert("You must enter a label for the file");
return;
}
if(document.getElementById('new_file_description').value == '')
{
alert("You must enter a description for the file");
return;
}
var fd = new FormData(document.getElementById('upload_form'));
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function()
{
if(this.readyState == 4)
{
var jsonObj = JSON.parse(this.responseText);
document.getElementById('progress').className = 'hide';
document.getElementById('veil').className = 'hide';
if(this.status != 201)
{
alert(jsonObj["reason"]);
}
next(0);
}
}
hideNew();
document.getElementById('progress').className = 'popup';
document.getElementById('progress_label').innerHTML = document.getElementById('new_file_label').value;
show_veil();
ajax.upload.addEventListener('progress', function(e) {
var percent_complete = (e.loaded/e.total)*100;
document.getElementById('progress_percentage').innerHTML = percent_complete+'%';
console.log(percent_complete);
});
ajax.open('POST',g_url+"files");
ajax.send(fd);
}
function play(e)
{
var split = e.target.id.split('_');
var type = split[1];
var uid = split[2];
type = type.substring(0, type.length-1); //remove the s
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function()
{
if(this.readyState == 4)
{
var jsonObj = JSON.parse(this.responseText);
if(this.status != 200)
{
alert(jsonObj["reason"]);
}
}
}
var play = { "command" : "play", "type" : type, "uid" : uid, "times_to_play" : 1, "shuffle" : false};
ajax.open("PATCH", g_url+"status",true);
ajax.setRequestHeader("Content-type", "application/json");
ajax.send(JSON.stringify(play));
}
var g_details = null;
function details(e)
{
if(g_details !== null)
{
g_details.className = "grid_resource";
}
g_details = e.target;
g_details.className = "grid_resource_selected";
showdetails();
}
function showdetails()
{
var split = g_details.id.split('_');
var type = split[1];
var uid = split[2];
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function()
{
if(this.readyState == 4)
{
var jsonObj = JSON.parse(this.responseText);
setElementText("details_uid", "uid", jsonObj);
setElementText("details_label", "label", jsonObj);
setElementText("details_description", "description", jsonObj);
setElementText("details_created", "created", jsonObj);
setElementText("details_locked", "locked", jsonObj);
document.getElementById("detail_action").className = "grid grid_details_files";
if(type == "files")
{
showFileDetails(jsonObj);
}
else if(type == "schedules")
{
showScheduleDetails(jsonObj);
}
else if(type == "playlists")
{
showPlaylistDetails(jsonObj);
}
}
}
ajax.open("GET", g_url+type+"/"+uid,true);
ajax.send();
}
function cleardetails()
{
clearElementText("details_uid");
clearElementText("details_label");
clearElementText("details_description");
clearElementText("details_created");
clearElementText("details_locked");
document.getElementById("detail_action").className = 'hide';
document.getElementById("details_files").className="hide";
document.getElementById("details_schedules").className="hide";
document.getElementById("details_playlists").className="hide";
}
function showFileDetails(jsonObj)
{
document.getElementById("details_files").className="grid grid_details_files";
document.getElementById("details_schedules").className="hide";
document.getElementById("details_playlists").className="hide";
setElementText("details_files_channels", "channels", jsonObj);
setElementText("details_files_samplerate", "samplerate", jsonObj);
if(jsonObj["format"] !== undefined)
{
setElementText("details_files_format", "subtype", jsonObj["format"]);
setElementText("details_files_type", "type", jsonObj["format"]);
}
document.getElementById("details_files_length").innerHTML = millisecondsToTime(jsonObj["length"]);
}
function showPlaylistDetails(jsonObj)
{
document.getElementById("details_files").className="hide";
document.getElementById("details_schedules").className="hide";
var div = document.getElementById("details_playlists");
div.className="grid grid_details_playlists";
while(div.firstChild)
{
div.removeChild(div.firstChild);
}
var divFile = document.createElement('div');
divFile.className = "grid_title";
divFile.innerHTML = "File";
div.appendChild(divFile);
var divLoop = document.createElement('div');
divLoop.className = "grid_title";
divLoop.innerHTML = "Times To Play";
div.appendChild(divLoop);
for(var i = 0; i < jsonObj["files"].length; i++)
{
var jsonFile = FindResource(jsonObj["files"][i]["uid"], g_files);
if(jsonFile !== null)
{
var divLabel = document.createElement('div');
divLabel.className = "grid_label";
divLabel.innerHTML = jsonFile["label"];
div.appendChild(divLabel);
var divTimes = document.createElement('div');
divTimes.className = "grid_label";
divTimes.innerHTML = jsonObj["files"][i]["times_to_play"];
div.appendChild(divTimes);
}
}
}
function showScheduleDetails(jsonObj)
{
document.getElementById("details_files").className="hide";
document.getElementById("details_playlists").className="hide";
var div = document.getElementById("details_schedules");
div.className="grid grid_details_schedules";
while(div.firstChild)
{
div.removeChild(div.firstChild);
}
var divType = document.createElement('div');
divType.className = "grid_title";
divType.innerHTML = "Type";
div.appendChild(divType);
var divLabel = document.createElement('div');
divLabel.className = "grid_title";
divLabel.innerHTML = "Label";
div.appendChild(divLabel);
var divTimes = document.createElement('div');
divTimes.className = "grid_title";
divTimes.innerHTML = "Times To Play";
div.appendChild(divTimes);
var divCron = document.createElement('div');
divCron.className = "grid_title";
divCron.innerHTML = "Cron";
div.appendChild(divCron);
if(jsonObj["files"] !== undefined)
{
for(var i = 0; i < jsonObj["files"].length; i++)
{
var jsonFile = FindResource(jsonObj["files"][i]["uid"], g_files);
if(jsonFile !== null)
{
showScheduleEntry(jsonFile, jsonObj["files"][i]["times_to_play"], jsonObj["files"][i]["cron"], "File", div);
}
else
{
var jsonFile = FindResource(jsonObj["files"][i]["uid"], g_playlists);
if(jsonFile !== null)
{
console.log(div);
showScheduleEntry(jsonFile, jsonObj["files"][i]["times_to_play"], jsonObj["files"][i]["cron"], "File", div);
}
}
}
}
if(jsonObj["playlists"] !== undefined)
{
for(var i = 0; i < jsonObj["playlists"].length; i++)
{
var jsonFile = FindResource(jsonObj["playlists"][i]["uid"], g_files);
if(jsonFile !== null)
{
console.log(div);
showScheduleEntry(jsonFile, jsonObj["playlists"][i]["cron"], "File", div);
}
else
{
var jsonFile = FindResource(jsonObj["playlists"][i]["uid"], g_playlists);
if(jsonFile !== null)
{
console.log(div);
showScheduleEntry(jsonFile, jsonObj["playlists"][i]["times_to_play"], jsonObj["playlists"][i]["cron"], "Playlist", div);
}
}
}
}
}
function showScheduleEntry(jsonObj, times_to_play, cron, type, divContainer)
{
divContainer = document.getElementById("details_schedules");
var divType = document.createElement('div');
divType.className = "grid_label";
divType.innerHTML = type;
divContainer.appendChild(divType);
var divLabel = document.createElement('div');
divLabel.className = "grid_label";
divLabel.innerHTML = jsonObj["label"];
divContainer.appendChild(divLabel);
var divTimes = document.createElement('div');
divTimes.className = "grid_label";
divTimes.innerHTML = times_to_play;
divContainer.appendChild(divTimes);
var divCron = document.createElement('div');
divCron.className = "grid_label";
divCron.innerHTML = cron;
divContainer.appendChild(divCron);
}
g_uid = "";
function update(e)
{
if(g_details)
{
var split = g_details.id.split('_');
var type = split[1];
g_uid = split[2];
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function()
{
if(this.readyState == 4)
{
var jsonObj = JSON.parse(this.responseText);
if(type == "files")
{
showUpdateFile(jsonObj);
}
else if(type == "schedules")
{
showUpdateSchedule(jsonObj);
}
else if(type == "playlists")
{
showUpdatePlaylist(jsonObj);
}
}
}
ajax.open("GET", g_url+type+"/"+g_uid,true);
ajax.send();
}
}
function showUpdatePlaylist(jsonObj)
{
console.log(jsonObj);
showNew();
document.getElementById('playlist_title').innerHTML="Modify Playlist";
document.getElementById('new_playlist_label').value = jsonObj['label'];
document.getElementById('new_playlist_description').value = jsonObj['description'];
for(var i = 0; i < jsonObj['files'].length; i++)
{
var fileObj = FindResource(jsonObj['files'][i]['uid'], g_files);
addPlaylistFile(jsonObj['files'][i]['uid'], fileObj['label'], jsonObj['files'][i]['times_to_play']);
}
}
function showUpdateSchedule(jsonObj)
{
console.log(jsonObj);
showNew();
document.getElementById('schedule_title').innerHTML="Modify Schedule";
document.getElementById('new_schedule_label').value = jsonObj['label'];
document.getElementById('new_schedule_description').value = jsonObj['description'];
if(jsonObj["files"] !== undefined)
{
for(var i = 0; i < jsonObj['files'].length; i++)
{
var fileObj = FindResource(jsonObj['files'][i]['uid'], g_files);
addScheduleFile(jsonObj['files'][i]['uid'], '[file] '+fileObj['label'], jsonObj['files'][i]['times_to_play'], jsonObj['files'][i]['cron']);
}
}
if(jsonObj["playlists"] !== undefined)
{
for(var i = 0; i < jsonObj['playlists'].length; i++)
{
var fileObj = FindResource(jsonObj['playlists'][i]['uid'], g_playlists);
addScheduleFile(jsonObj['playlists'][i]['uid'], '[playlist] '+fileObj['label'], jsonObj['playlists'][i]['times_to_play'], jsonObj['playlists'][i]['cron']);
}
}
}
function showUpdateFile(jsonObj)
{
console.log(jsonObj);
g_jsonPost = {};
document.getElementById('update_files').className = 'popup';
show_veil();
document.getElementById('update_file_label').value = jsonObj['label'];
document.getElementById('update_file_description').value = jsonObj['description'];
}
function hideUpdateFile()
{
document.getElementById('update_files').className = 'hide';
document.getElementById('veil').className = 'hide';
}
function update_fileMeta()
{
if(g_uid)
{
g_jsonPost['label'] = document.getElementById('update_file_label').value;
g_jsonPost['description'] = document.getElementById('update_file_description').value;
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function()
{
if(this.readyState == 4)
{
var jsonObj = JSON.parse(this.responseText);
if(this.status != 200)
{
alert(jsonObj["reason"]);
}
else
{
next(0);
}
}
}
hideUpdateFile();
ajax.open("PATCH", g_url+"files/"+g_uid,true);
ajax.setRequestHeader("Content-type", "application/json");
ajax.send(JSON.stringify(g_jsonPost));
}
}
function deleteResource(e)
{
if(g_details)
{
var split = g_details.id.split('_');
var type = split[1];
var uid = split[2];
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function()
{
if(this.readyState == 4)
{
var jsonObj = JSON.parse(this.responseText);
console.log(jsonObj);
g_details = null;
cleardetails();
if(this.status != 200)
{
alert(jsonObj["reason"]);
}
next(0);
}
}
console.log(g_url+type+"/"+uid);
ajax.open("DELETE", g_url+type+"/"+uid,true);
ajax.setRequestHeader("Content-type", "application/json");
ajax.send();
}
}a
function stop()
{
console.log("stop");
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function()
{
if(this.readyState == 4)
{
var jsonObj = JSON.parse(this.responseText);
console.log(jsonObj);
}
}
var play = { "command" : "stop"};
if(g_bOrphaned)
{
play = { "command" : "kill"};
}
console.log(play);
ajax.open("PATCH", g_url+"status",true);
ajax.setRequestHeader("Content-type", "application/json");
ajax.send(JSON.stringify(play));
}
function show(event)
{
g_show = event.target.id;
document.getElementById('div_files').className = 'hide';
document.getElementById('div_playlists').className = 'hide';
document.getElementById('div_schedules').className = 'hide';
document.getElementById('div_'+event.target.id).className = 'grid_resources';
document.getElementById('files').className = 'tab_label';
document.getElementById('playlists').className = 'tab_label';
document.getElementById('schedules').className = 'tab_label';
event.target.className = 'tab_label_selected';
}
function update_popups()
{
document.getElementById('new_file_file').value = '';
document.getElementById('new_file_label').value = '';
document.getElementById('new_file_description').value = '';
document.getElementById('new_playlist_label').value = '';
document.getElementById('new_playlist_description').value = '';
document.getElementById('playlist_title').innerHTML="New Playlist";
document.getElementById('file_title').innerHTML="New File";
document.getElementById('schedule_title').innerHTML="New Schedule";
var div = document.getElementById('new_playlist_files')
while(div.firstChild)
{
div.removeChild(div.firstChild);
}
div = document.getElementById('new_schedule_files')
while(div.firstChild)
{
div.removeChild(div.firstChild);
}
var selP = document.getElementById('possible_playlist_files');
var selS = document.getElementById('possible_schedule_files');
while(selP.options.length > 0)
{
selP.remove(0);
}
while(selS.options.length > 0)
{
selS.remove(0);
}