/*
DHTML lemmings(tm)
GNU Copyright (C) 2004 crisp - freesoftware@xs4all.nl

I enjoyed some of the functions so much I just had to make them my own.
Where good functions wait for an object to call home.
*/

// Version information
var app = 'DHTML SpaceOut~!';   // application title
var ver = '0.01';                    // version
var pch = 'e';                       // patch level
var version = app+' v'+ver+pch;      // Full application title
var rts = 1091360050;                // release timestamp

// redirect when not in frames or in foreign frame
try {
  if (window.top == window.self || !(window.top.document.title = document.title)) top.location.replace('../index.html');
} catch(e) {
  top.location.replace('../index.html');
}

// assume not mainmenu
var mainmenu = 0;

//detect IE
var ie = window.ActiveXObject? true : false;

// empty placeholder
function init() { }

function GetUrlParameter(param) { 
	var val = ""; 
	var qs = window.location.search;
	var start = qs.indexOf(param); 
	
	if (start != -1) {  
		start += param.length + 1;  
		var end = qs.indexOf("&", start); 

		if (end == -1) {  
			end = qs.length 
		} 

		val = qs.substring(start,end);
	} 
	return val;
}

// default keyhandler
function keyhandler(e) {
	alert("standards key handler");

  if (!e) e = event;
  var key = e.which || e.keyCode || 0;

  // cancel all functionkeys, redirect on escape
  if (key == 27 || (key >= 112 && key <= 123)) {

    if (mainmenu == 0 && key == 27) redirect('menu.html');

    return cancelEvent(e);
  }

  return true;
}

//console
function msg_console(msg){
    document.getElementById('console').innerHTML = "<p>"+msg+"</p>";
}

// Time formatting
function formattime(timestamp) {
  var D = timestamp? new Date(timestamp*1000):new Date();
  var h = D.getHours();
  var m = D.getMinutes();
  var s = D.getSeconds();

  if (h == 24) h = 0;

  if (h < 10) h = '0' + h;

  if (m < 10) m = '0' + m;

  if (s < 10) s = '0' + s;

  return h+':'+m+':'+s;
}

// Date formatting
function formatdate(timestamp) {
  var D = new Date(timestamp*1000);
  var y = D.getFullYear();
  var m = D.getMonth() + 1;
  var d = D.getDate();

  if (m < 10) m = '0' + m;
  if (d < 10) d = '0' + d;

  return d+'/'+m+'/'+y;
}

function validate(c) {
  return c.substr(0,9).indexOf(String.fromCharCode(84)) == -1;
}

/*Move this to own file?*/
var music_init = null;
function init_music() {
  // first time
  if (music_init == null) {
    // no contextmenu, dragging or selecting
    if (typeof document.oncontextmenu != 'undefined') {
      document.oncontextmenu = cancelEvent;
    } else {
      document.onclick = noRightClick;
    }
    if (typeof document.onselectstart != 'undefined') document.onselectstart = cancelEvent;
    if (typeof document.ondragstart != 'undefined') document.ondragstart = cancelEvent;

    // general keyhandler
    if (typeof document.onhelp != 'undefined') {
      document.onkeydown = keyhandler;
      document.onhelp = cancelEvent;
    } else {
      document.onkeypress = keyhandler;
    }

    // set focus
    window.focus();
  }
  
  if (parent.playing == true) {
    music_init = null;
    init();
  } else if (parent.musicLoaded == true) {
    if (parent.soundEnabled && parent.music && parent.frames['bgmusic'].playmusic() == false) parent.soundEnabled = false;
    music_init = null;
    init();
  } else {
    music_init = setTimeout('init_music()', 200);
  }
}


function leftClick(e) {
  if (!e) e = event;
  return ((typeof e.which == 'undefined') ? (e.button == 1) : (e.which == 1 || e.button == 0));
}

function noRightClick(e) {
  if (leftClick(e) == false) return cancelEvent(e);
  return true;
}

function cancelPropagation(e) {
  if (!e) e = event;
  if (e.stopPropagation) e.stopPropagation();
  else if (typeof e.cancelBubble != 'undefined') e.cancelBubble = true;
}

function cancelEvent(e) {
  if (!e) e = event;

  if (typeof e.preventDefault != 'undefined'){ 
    e.preventDefault();
  } else if (typeof e.cancelBubble != 'undefined') {
    if (e.keyCode) e.keyCode = 0;
    e.returnValue = 0;
    e.cancelBubble = true;
  }

  return false;
}

function redirect(url) {
  if (typeof in_game !== 'undefined') {
    if (parent.playing == true) parent.frames['bgmusic'].stopmusic();
    parent.musicLoaded = false;
    parent.frames['bgmusic'].location.replace('../html/playmusic.html?file=lemmings.mid');
  }

  window.location.replace(url);
}

function include(url) {
  document.write('<scr'+'ipt type="text/javascript" src="'+url+'"><\/scr'+'ipt>');
}

function stripAttribute(which){      
    var a = which.split(/[epEP]/);    
    a[0] *= 1;
    return a[0];
}

var counter;
function countDown(from){
	if(from > 0){
		var oldel = document.getElementById('countdown_'+(from+1));
		if(oldel)
			oldel.style.visibility = "hidden";
		var el = document.getElementById('countdown_'+from);
		el.style.visibility = "visible";
		counter = --from;
		if(from == 0)
			playsound('ballhit');
		setTimeout('countDown(counter)', 1000);
	}
	else{
		var oldel = document.getElementById('countdown_1');
		if(oldel){
			oldel.style.visibility = "hidden"; 
		}
	}
}