var listeners = {onLoad:{},onUnload:{},onTabChange:{}},evDepth = 0;
var currentSelector,selectors = {},pinCalendar;

window.onload=function() {
  callListeners('onLoad',null,true);
  if ($id('alertBox'))
    setTimeout(function () {
      fadeOut($id('alertBox'));
    },3000);
  onEvent(document.body,'click',closeSelector);
  for (var selectorId in selectors) {
    var linked = selectors[selectorId].linkedSelector;
    if (linked) {
      var v = getSelValue(selectorId);
      if (v)
        loadSelector(linked,v);
    }
  }
};

function isIE() {
  return navigator.userAgent.indexOf('MSIE') > 0;
}

function fadeOut(e) {
  var alpha = 100;
  var i = setInterval(function () {
    alpha -= 10;
    if (alpha == 0) {
      e.style.display = 'none';
      e = null;
      clearInterval(i);
    }
    else if (isIE()) e.style.filter = 'alpha(opacity=' + alpha + ')';
      else e.style.opacity = alpha/100;
  },50);
}

function getListeners(eventName,target) {
    var l = listeners[eventName];
    if (!l) return alert("Unknown event: "+eventName);
    var t = l[target];
    if (!t) l[target] = t = [];
    return t;
}

function callListeners(eventName,target,args) {
    if (!target) target = undefined;
    var l = getListeners(eventName,target);
    for (var i=0; i<l.length; ++i) l[i](target,args);
}

function listen(eventName,fn,target) {
    var l = getListeners(eventName,target);
    if (l) l.push(fn);
}

function unlisten(eventName,fn,target) {
	if (!target) target = undefined;
    var l = getListeners(eventName,target);
    for (var n = 0; n < l.length; ++n)
        if (l[n] == fn) {
            l.splice(n,1);
            return;
        }
    alert("Can't unregister " + eventName + " listener:\n" + fn);
}

function $id(id) {
    return document.getElementById(id);
}

function $f(name) {
    if (name) return document.forms[0][name];
    return document.forms[0];
}

function exists(name) {
    return window.hasOwnProperty(name) && window[name] != undefined;
}

function unset(name) {
    window[name] = undefined;
}

function go(url,ev) {
	location = url;
	if (ev) stopPropagation(ev);
}

function doAction(name,param) {
    $f('_action').value = name + (param != undefined ? ':' + param : '');
    $f().action = location.href; //update url (ex. the hash may have changed)
    if (Form_onSubmit())
        $f().submit();
}

function onEvent(e,evName,fn) {
    if (e['addEventListener']) {
        e.addEventListener(evName,fn,false);
        return true;
    }
    else if (e['attachEvent'])
        return e.attachEvent('on' + evName,function() {
            event.target = event.srcElement;
            fn(event);
        });
    else e['on' + evName] = fn;
}

function stopPropagation(ev) {
    if (window.event && window.event.cancelBubble != undefined)
        window.event.cancelBubble = true;
    if (ev && ev.stopPropagation)
        ev.stopPropagation();
}

function preventDefault(ev) {
    if (window.event && window.event.returnValue != undefined)
        window.event.returnValue = false;
    if (ev && ev.preventDefault)
        ev.preventDefault();
}

function focusField(name) {
    setTimeout(function(){
        var e=document.forms[0].elements[name];
        if(e){
            if(e.length) e=e[1];
            try {
                e.focus();
            }
            catch(x){}
        }
    },1);
}

function Form_onSubmit(ev)
{
    if (window.onSubmit) return window.onSubmit($f());
    return $f('_action').value != '';
}

function $form(e) {
    if(e.form) return e.form;
    while(e=e.parentNode)
      if (e.nodeName=='FORM') return e;
    return null;
}

function ImageField_blank(uid,className) {
    var i=$id(uid);
    var e=document.createElement('DIV');
    e.className='emptyImg'+(className?' '+className:'');
    i.replaceChild(e,NthChild(i,1));
    return e;
}

function ImageField_clear(uid)
{
    ImageField_blank(uid);
    $id(uid+'Field').value='';
    e=$id(uid+'File');
    if (e.outerHTML) e.outerHTML=e.outerHTML;
    else e.value='';
    Button_disable(uid+'Clear');
}

function ImageField_onChange(uid)
{
    var e=ImageField_blank(uid,'upload');
    var src=$id(uid+'File').value;
    if (!src.match(/.jpg$|.jpeg$|.png$|.gif$|.bmp$/i))
        alert("Atenção!\n\nVerifique se o ficheiro seleccionado\nse encontra no formato JPEG, PNG, GIF ou BMP!");
    src=src.match(/(?:\\|\/|^)([^\\\/]*)$/);
    e.innerHTML='<div class="label">'+src[1]+'</div>';
    Button_enable(uid+'Clear');
}

function VideoField_blank(uid,className) {
    var i=NthChild($id(uid),1);
    var e=document.createElement('DIV');
    e.className='emptyVid'+(className?' '+className:'');
    i.replaceChild(e,NthChild(i,0));
    return e;
}

function VideoField_clear(uid)
{
    VideoField_blank(uid);
    $id(uid+'Field').value='';
    e=$id(uid+'File');
    if (e.outerHTML) e.outerHTML=e.outerHTML;
    else e.value='';
    Button_disable(uid+'Clear');
}

function VideoField_onChange(uid)
{
    var e=VideoField_blank(uid,'upload');
    var src=$id(uid+'File').value;
    if (!src.match(/.flv$|.swf$/i))
        alert("Atenção!\n\nVerifique se o ficheiro seleccionado\nse encontra no formato FLV ou SWF!");
    src=src.match(/(?:\\|\/|^)([^\\\/]*)$/);
    e.innerHTML='<div class="label">'+src[1]+'</div>';
    Button_enable(uid+'Clear');
}

function FileUpload_clear(uid)
{
    $id(uid+'Field').value='';
    $id(uid+'File').value='';
    $id(uid+'InputField').value='';
    Button_disable(uid+'Clear');
}

function FileUpload_onChange(uid)
{
    var path=$id(uid+'File').value.match(/(?:\\|\/|^)([^\\\/]*)$/);
    $id(uid+'InputField').value=path[1];
    Button_enable(uid+'Clear');
}

function Button_onConfirm(action,msg)
{
    if (confirm(msg))
        doAction(action);
}

function Button_enable(id) {
    var button=$id(id);
    if (!Button_isEnabled(id)) {
        button.disabled=false;
        skipWhitespace(button.firstChild).className=skipWhitespace(button.firstChild).className.replace(/ ?disabled/,"");
    }
}

function Button_disable(id) {
    var button=$id(id);
    if (Button_isEnabled(id)) {
        button.disabled=true;
        skipWhitespace(button.firstChild).className=skipWhitespace(button.firstChild).className+=" disabled";
    }
}

function Button_isEnabled(id) {
    return !$id(id).disabled;
}

function saveScrollPos(form) {
    form.elements.scroll.value=document.getElementsByTagName("HTML")[0].scrollTop
      + document.body.scrollTop;
}

function scroll(y) {
    if (y==undefined) y=9999;
    setTimeout(function(){
      document.getElementsByTagName("HTML")[0].scrollTop = y;
      if (document.getElementsByTagName("HTML")[0].scrollTop != y)
        document.body.scrollTop = y;
    },1);
}

function ActiveElement_init() {
    this.onmousedown=Active_down;
    this.onmouseup=Active_up;
}

function Active_down() {
    this.className+=" active";
    this.setCapture();
}

function Active_up() {
    this.releaseCapture();
    this.className=this.className.replace(/ ?active/,"");
}

function Button_init() {
    this.hideFocus=true;
    this.onmousedown=Button_down;
    this.onmouseup=Button_up;
    this.onkeydown=Button_keyDown;
    this.onkeyup=Button_keyUp;
    this.onblur=Button_blur;
    this.onfocus=Button_focus;
}

function Button_down() {
    this.firstChild.className=this.firstChild.className+=" active";
    this.setCapture();
}

function Button_up() {
    this.releaseCapture();
    this.firstChild.className=this.firstChild.className.replace(/ ?active/,"");
}

function Button_keyDown() {
    if(event.keyCode==13||event.keyCode==32) Button_down.call(this);
}

function Button_keyUp() {
    if(event.keyCode==13||event.keyCode==32) {
        Button_up.call(this);
        this.click();
    }
}

function Button_focus() {
    this.firstChild.className=this.firstChild.className+=" focus";
}

function Button_blur() {
    this.firstChild.className=this.firstChild.className.replace(/ ?focus/,"");
}

function Tab_init() {
    this.onmouseover=Tab_over;
    this.onmouseout=Tab_out;
}

function Tab_over() {
    if (this.className.indexOf("selected")<0)
      this.className+=" hover";
}

function Tab_out() {
    this.className=this.className.replace(" hover","");
}

function Tab_change(tabFld,tabsId,url) {
    var hasPages = false;
    Tabs_enumerate(tabsId,function(i,tab,tabFld,page) {
        tab.className=tab.className.replace(/ ?selected| ?hover/g,"");
        if (page) hasPages = true;
    });
    addClass(tabFld.parentNode,'selected');
    if (url) go(url);
    else if (hasPages) //page display may take some time
        setTimeout(function() {
            Tabs_enumerate(tabsId,function(i,tab,tabFld,page) {
                if (!tabFld.checked) Tab_hidePage(page);
            });
            Tabs_enumerate(tabsId,function(i,tab,tabFld,page) {
                if (tabFld.checked) {
                    if (Tab_showPage(page) && tabsId) callListeners('onTabChange',tabsId);
                    return 1;
                }
            });
        },1);
}

function Tab_showPage(page) {
    if (page && page.className.indexOf('TabPage_selected') < 0) {
        addClass(page,'TabPage_selected');
        if (!page.firstChild) {
            ++evDepth;
            var html = window[page.id + 'Content'];
            page.innerHTML = html;
            var match,r = new RegExp('<script.*?>([\\s\\S]*?)<\\/script>','g'),f=false;
            while (match = r.exec(html))
              globalEval(match[1]);
            if (evDepth == 1) callListeners('onLoad',null,false);
            --evDepth;
        }
        return true;
    }
    return false;
}

function Tab_hidePage(page) {
    if (page && page.className.indexOf('TabPage_selected') >= 0) {
        //callListeners('onUnload',null,false);
        removeClass(page,'TabPage_selected');
        //page.innerHTML = '';
    }
}

function Tabs_getSelectedIndex(tabsId) {
    return Tabs_enumerate(tabsId,function(idx,tab,tabFld) {
        if (tabFld.checked) return parseInt(tabFld.value);
    });
}

function Tabs_setSelectedIndex(tabsId,i) {
    return Tabs_enumerate(tabsId,function(idx,tab,tabFld) {
        if (i == idx) {
            tabFld.checked = true;
            Tab_change(tabFld,tabsId);
            return;
        }
    });
}

function Tabs_enumerate(tabsId,fn) {
    for (var i = 0;;++i) {
        tab = $id(tabsId + 'Tab' + i + "Field");
        if (!tab) break;
        else {
            var r = fn(i,tab.parentNode,tab,NthChild($id(tabsId + 'Pages'),i));
            if (r != undefined) return r;
        }
    }
    return null;
}

function NthChild(e,n) {
	if (e) {
	    var c = e.firstChild;
	    while (c) {
	        if (c.nodeType == 1 && n-- == 0) return c;
	        c = c.nextSibling;
	    }
	}
}

function getPathToSelf() {
    var myName=/^(.*?)engine\.js/;
    var scripts=document.getElementsByTagName("script");
    for (var i=0;i<scripts.length;i++) {
        var src=scripts[i].getAttribute("src");
        if (src) {
            var m=src.match(myName);
            if (m) return m[1];
        }
    }
}

function fixImgPng() {
  this.runtimeStyle.behavior="none";
  if (this.nodeName=="IMG"&&this.src.match(/\.png/i)) {
      this.runtimeStyle.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+this.src+"')";
      this.src=getPathToSelf()+"empty.gif";
  }
}

function fixBkPng() {
  this.runtimeStyle.behavior="none";
  var url=this.currentStyle.backgroundImage;
  if (url.match(/\.png/i)) {
    url=url.match(/\(['"]?(.*?)['"]?\)/)[1];
    this.runtimeStyle.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+url+"',sizingMethod='crop')";
    this.runtimeStyle.backgroundImage="none";
  }
}

function FCKeditor_OnComplete(fck) {
    fck.EditorWindow.parent.document.body.style.visibility = '';
}

function number(n,defaultValue) {
    n = parseFloat(n);
    if (isNaN(n)) return defaultValue;
    return n;
}

function addClass(e,className) {
    removeClass(e,className);
    e.className += ' ' + className;
}

function removeClass(e,className) {
    e.className=e.className.replace(new RegExp(' ?' + className),'');
}

function setBookmark(url,title) {
    if (window.sidebar) // Mozilla Firefox Bookmark
        window.sidebar.addPanel(title,url,"");
    else if( window.external ) // IE Favorite
        window.external.AddFavorite(url,title);
    else alert('To bookmark this site you need to do so manually through your browser.');
}

function checkKeybAction(event,action) {
  if (event.keyCode == 13) setTimeout(function(){
    doAction(action);
  },1);
}

function nop() {}

var LIdragging = false,LIx,LIy,LItem;

function startLIDrag(ev) {
  LIdragging = true;
  onEvent(document.body,'mousemove',LIDrag);
  onEvent(document.body,'mouseup',stopLIDrag);
  LItem = ev.target.parentNode.parentNode.parentNode;
  for (var n = 0; n < LItem.cells.length; ++n) {
    LItem.cells[n].style.width = (LItem.cells[n].firstChild.clientWidth ? LItem.cells[n].firstChild.clientWidth : LItem.cells[n].clientWidth) + 'px';
    LItem.cells[n].style.height = LItem.cells[n].clientHeight + 'px';
  }
  LItem.style.position = 'absolute';
  LIx = ev.x;
  LIy = ev.y;
  moveLI(LIx,LIy);
  preventDefault(ev);
  stopPropagation(ev);
}

function stopLIDrag(ev) {
  LIdragging = false;
  document.body.removeEventListener('mousemove',LIDrag);
  document.body.removeEventListener('mouseup',stopLIDrag);
  moveLI(0,0);
  LItem.style.position = '';
  LItem = null;
  preventDefault(ev);
  stopPropagation(ev);
}

function LIDrag(ev) {
  if (LIdragging)
    moveLI(ev.x,ev.y);
}

function moveLI(x,y) {
  //LItem.style.marginLeft = (x - LIx) + 'px';
  LItem.style.marginTop = (y - LIy) + 'px';
}

function skipWhitespace(elem) {
  while (elem && elem.nodeType == 3)
    elem = elem.nextSibling;
  return elem;
}

function getChild(elem,index) {
  if (!elem)
    return null;
  var e = skipWhitespace(elem.firstChild);
  while (index-- && e)
	e = skipWhitespace(e.nextSibling);
  return e;
}

function textValue(elem) {
  return elem.innerText ? elem.innerText : elem.text;
}

function openSelector(id) {
	if (currentSelector != id)
      setTimeout(function() {currentSelector = id},1);
	var selBody = $id(id);
	selBody.style.zIndex = 9999;
	var list = getChild(selBody,2);
	list.style.display = 'block';
	var li = getChild(list,0);
	var i = getChild(li,0);
	while (i) {
	  if (i.className == 'selected') {
		var y = i.offsetTop - 1;
		li.scrollTop = y > list.offsetHeight - i.offsetHeight ? y : 0;
		break;
	  };
	  i = skipWhitespace(i.nextSibling);
	}
}

function closeSelector() {
  if (currentSelector) {
    var selBody = $id(currentSelector);
    selBody.style.zIndex = '';
  	var list = getChild(selBody,2);
  	list.style.display = '';
  	currentSelector = null;
  }
}

function setSel(e,value) {
	var label = textValue(e);
	var list = e.parentNode;
	var selector = list.parentNode.parentNode;
	var id = selector.getAttribute('id');
	setSelValue(id,value,label);
}

function setSelValue(id,value,label) {
  var selector = $id(id);
  var inputDiv = getChild(selector,1);
  var input = getChild(getChild(inputDiv,0),0);
  var li = findSelectorItem(id,value);
  input.value = li ? label : (selectors[id].prompt ? selectors[id].prompt : selectors[id].emptyLabel);
  var hidden = getChild(selector,3);
  hidden.value = li ? value : '';
  unselectSelectorList(id);
  if (li)
    li.className = 'selected';
  if (selectors[id]) {
    if (selectors[id].onChange)
      eval(selectors[id].onChange);
    var l = selectors[id].linkedSelector;
    if (l)
      loadSelector(l,value,selectors[id].autoOpenLinked);
  }
}

function getSelValue(id) {
  var hidden = getChild($id(id),3);
  return hidden && hidden.value;
}

function getSelLabelFor(id,value) {
  var e = findSelectorItem(id,value);
  if (e) return e.innerHTML;
  return null;
}

function enableSelector(id,enabled) {
  var selector = $id(id);
  if (enabled)
    removeClass(selector,'disabled');
  else addClass(selector,'disabled');
  var inputDiv = getChild(selector,1);
  if (enabled)
    removeClass(inputDiv,'disabled');
  else addClass(inputDiv,'disabled');
  var input = getChild(getChild(inputDiv,0),0);
  input.disabled = !enabled;
  var button = getChild(selector,0);
  if (enabled)
    removeClass(button,'disabled');
  else addClass(button,'disabled');
  button.disabled = !enabled;
  if (enabled)
    return;
  var l = selectors[id].linkedSelector;
  if (l)
    enableSelector(l,false);
}

function findSelectorItem(id,value) {
  var selector = $id(id);
  var list = getChild(getChild(selector,2),0);
  var li = getChild(list,0);
  while (li) {
    var v = li.getAttribute('value');
    if (v == value)
      return li;
    li = skipWhitespace(li.nextSibling);
  }
  return null;
}

function unselectSelectorList(id) {
  var selector = $id(id);
  var list = getChild(getChild(selector,2),0);
  var li = getChild(list,0);
  while (li) {
    li.className = null;
    li = skipWhitespace(li.nextSibling);
  }
}

function setSelectorList(id,content) {
  var selector = $id(id);
  var list = getChild(getChild(selector,2),0);
  list.innerHTML = content;
  var v = selectors[id].value;
  if (v)
    setSelValue(id,v,getSelLabelFor(id,v));
}

function loadSelector(id,value,autoOpen) {
  var v = selectors[id].value = getSelValue(id);
  setSelValue(id,'',selectors[id].prompt ? selectors[id].prompt : selectors[id].emptyLabel);
  enableSelector(id,false);
  if (value != '' && value != null) {
    var url = selectors[id].sourceUrl + value;
    jQuery.get(url,null,function(data) {
      data = eval(data);
      if (!(data instanceof Array))
        return;
      var html = !selectors[id].emptySelection ? '' :
        '<a onclick="setSel(this,\'\')" title="' +selectors[id].emptyLabel + '" href="javascript:nop()">' + selectors[id].emptyLabel + '</a>';
      var label,value;
      for (var i = 0; i < data.length; ++i) {
        if (data[i] instanceof Array) {
          value = data[i][0];
          label = data[i][1];
        }
        else label = value = data[i];
        html += '<a value="' + value + '" onclick="setSel(this,\'' + value + '\')" title="' + label + '" href="javascript:nop()">' + label + '</a>';
      }
      setSelectorList(id,html);
      if (data.length) {
        enableSelector(id,true);
        if (autoOpen)
          openSelector(id);
      }
      else enableSelector(id,false);
    });
  }
}

function preventOpeningCalendar(cal) {
  var f = cal.openCalendar;
  cal.openCalendar = nop;
  setTimeout(function() {
    cal.openCalendar = f;
  },1);
}

//for nogray
function onPopupCalPrePick(name) {
  pinCalendar = true;
  setTimeout(function() {
    $f(name).focus();
    pinCalendar = false;
  },1);
}

function onInputCalSelect(id,name) {
  if (exists(id))
    window[id].closeCalendar();

}

function spinUp(id,max) {
  var f = $f(id);
  if (f.disabled || f.readOnly)
    return;
  var v = parseInt(f.value);
  var o = v;
  if (isNaN(v)) v = 0;
  v += 1;
  if (max != '' && v > max)
    v = max;
  f.value = v;
  if (v != o && f.onchange)
    f.onchange();
  spinStop(id);
}

function spinDown(id,min) {
  var f = $f(id);
  if (f.disabled || f.readOnly)
    return;
  var v = parseInt(f.value);
  var o = v;
  if (isNaN(v)) v = 0;
  v -= 1;
  if (min != '' && v < min)
    v = min;
  f.value = v;
  if (v != o && f.onchange)
    f.onchange();
  spinStop(id);
}

function spinStart(id) {
  var f = $f(id);
  addClass(f,'focus');
}

function spinStop(id) {
  var f = $f(id);
  removeClass(f,'focus');
  f.focus();
}

var globalEval = function globalEval(src) {
  if (window.execScript)
      window.execScript(src);
  else window.eval(src);
};