var agt = navigator.userAgent.toLowerCase();
var is_ie = (agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1);
var is_gecko = navigator.product == "Gecko";
var is_opera  = (agt.indexOf("opera") != -1);
var is_mac    = (agt.indexOf("mac") != -1);
var is_mac_ie = (is_ie && is_mac);
var is_win_ie = (is_ie && !is_mac);

var LOADING_STATUS_PAGE = '/shared/loading.html';
var PROGRESS_PAGE = '/shared/progress.html';
var PROGRESS_IS_SHOWN = false;

if(get_query_item(location.href, 'popup'))
{
  add_event(window, 'load', process_popup);
}

function add_page_to_favourities()
{
  if (window.sidebar)
  {
    window.sidebar.addPanel(window.document.title, window.location, "");
  }
  else if(document.all)
  {
    window.external.AddFavorite( window.location, window.document.title);
  }
  else if(window.opera && window.print)
  {
    return true;
  }
}

function make_homepage(obj)
{
  if(document.all)
  {
    obj.event.srcElement.style.behavior='url(#default#homepage)';
    obj.event.srcElement.setHomePage(window.location);
  }
}

function add_event(control, type, fn, use_capture)
{
 if (control.addEventListener)
 {
   control.addEventListener(type, fn, use_capture);
   return true;
 }
 else if (control.attachEvent)
 {
   var r = control.attachEvent("on" + type, fn);
   return r;
 }
}

function get_query_item(page_href, item_name)
{
  arr = get_query_items(page_href);

  if(arr[item_name])
    return arr[item_name];
  else
    return null;
}

function build_query(items)
{
  query = '';
  for(index in items)
  {
    query = query + index + '=' + items[index] + '&';
  }
  return query;
}

function get_query_items(uri)
{
  query_items = new Array();

  arr = uri.split('?');
  if(!arr[1])
    return query_items;

  query = arr[1];

  arr = query.split('&');

  for(index in arr)
  {
    if(arr[index])
    {
      key_value = arr[index].split('=');
      if(!key_value[1])
        continue;

      query_items[key_value[0]] = key_value[1];
    }
  }

  return query_items;
}

function set_http_get_parameter(uri, parameter, val)
{
  uri_pieces = uri.split('?');

  items = get_query_items(uri);
  items[parameter] = val;

  return uri_pieces[0] + '?' + build_query(items);
}

function add_random_to_url(page_href)
{
  if(page_href.indexOf('?') == -1)
    page_href = page_href + '?';

  page_href = page_href.replace(/&*rn=[^&]+/g, '');

  items = page_href.split('#');

  page_href = items[0] + '&rn=' + Math.floor(Math.random()*10000);

  if(items[1])
    page_href = page_href + '#' + items[1];

  return page_href;
}

function toggle_display(obj_id)
{
  obj = document.getElementById(obj_id);
  if (typeof(obj) == 'object')
    if (typeof(obj.length) != 'undefined')
      for(i=0; i<obj.length; i++)
        toggle_obj_display(obj[i]);
    else
      toggle_obj_display(obj);
}

function toggle_obj_display(obj)
{
  if (obj.style.display == 'none')
  {
    obj.style.display = 'block';
    add_cookie_element('displayed_objects', obj.id);
    remove_cookie_element('hidden_objects', obj.id);
  }
  else
  {
    obj.style.display = 'none';
    add_cookie_element('hidden_objects', obj.id);
    remove_cookie_element('displayed_objects', obj.id);
  }
}

function optimize_window()
{
  var w = window;
  var top_opener = window;

  var x_ratio = 0.85;
  var y_ratio = 0.85;
  var screen_x = (is_gecko) ? top_opener.screenX : top_opener.screenLeft;

  while(typeof(top_opener.top.opener) != 'undefined' && top_opener.top.opener != null && screen_x > 0)
  {
    screen_x = (is_gecko) ? top_opener.screenX : top_opener.screenLeft;
    top_opener = top_opener.top.opener;
  }

  if (is_ie)
  {
    openerWidth = top_opener.document.body.clientWidth;
    openerHeight = top_opener.document.body.clientHeight;
    openerLeft = top_opener.screenLeft;
    openerTop = top_opener.screenTop;
  }
  else if(is_gecko || is_opera)
  {
    openerWidth = top_opener.innerWidth;
    openerHeight = top_opener.innerHeight;
    openerLeft = top_opener.screenX + top_opener.outerWidth - top_opener.innerWidth;
    openerTop = top_opener.screenY + top_opener.outerHeight - top_opener.innerHeight;
  }
  else
  {
    openerWidth = top_opener.document.body.clientWidth;
    openerHeight = top_opener.document.body.clientHeight;
    openerLeft = top_opener.screenLeft;
    openerTop = top_opener.screenTop;
  }

  if(window.WINDOW_WIDTH)
    newWidth = window.WINDOW_WIDTH;
  else
    newWidth = openerWidth*x_ratio;

  if(window.WINDOW_HEIGHT)
    newHeight = window.WINDOW_HEIGHT;
  else
    newHeight = openerHeight*y_ratio;


  newLeft = openerLeft + (openerWidth - newWidth)/2;
  newTop = openerTop + (openerHeight - newHeight)/2;

  w.moveTo(newLeft, newTop);
  w.resizeTo(newWidth, newHeight);
}

//makes popup window at href address
function popup(href, window_name, window_params, dont_set_focus, on_close_handler, on_init_handler)
{
  href = set_http_get_parameter(href, 'popup', 1);

  if (typeof(window_name) == 'undefined' || window_name == null)
    window_name = '_generate';

  new_left = window.screen.width / 2 - 100;
  new_top = window.screen.height / 2 - 50;

  if (typeof(window_params) == 'undefined' || window_params == null)
    window_params = 'width=150,height=50,left=' + new_left + ',top=' + new_top + ',scrollbars=yes,resizable=yes,help=no,status=yes';
  else
    window_params = 'left=' + new_left + ',top=' + new_top + ',' + window_params;

  if (window_name.toLowerCase() == '_generate')
    window_name = 'w' + hex_md5(href) + 's';

  if (typeof(window.popups) != 'array')
    window.popups = new Array();

  if (typeof(window.popups[window_name]) != 'array')
    window.popups[window_name] = new Array();

  if (typeof(on_close_handler) != 'undefined')
    window.popups[window_name]['close_popup_handler'] = on_close_handler;

  if (typeof(on_init_handler) != 'undefined')
    window.popups[window_name]['init_popup_handler'] = on_init_handler;

  window.popups[window_name]['status'] = 'popped_up';

  w = window.open(LOADING_STATUS_PAGE, window_name, window_params);
  if (href != LOADING_STATUS_PAGE)
   w.location.href = href;

  if(!dont_set_focus)
    w.focus();

  return w;
}

function process_popup()
{
  href = location.href;

  if (window.opener && window.opener.popups)
    if (window.opener.popups[window.name]['status'] == 'popped_up')
      optimize_window();

  if(opener && (get_query_item(href, 'reload_parent')))
    opener.location.reload();
  else
    if (typeof(window.opener.popups) != 'undefined')
      window.opener.popups[window.name]['status'] = 'processed';
}

function trim(value)
{
   var temp = value;
   var obj = /^(\s*)([\W\w]*)(\b\s*$)/;

   if (obj.test(temp))
    temp = temp.replace(obj, '$2');

   var obj = / +/g;
   temp = temp.replace(obj, " ");
   if (temp == " ")
    temp = "";

   return temp;
}

function get_cookie(name)
{
  var a_cookie = document.cookie.split("; ");
  for (var i=0; i < a_cookie.length; i++)
  {
    var a_crumb = a_cookie[i].split("=");
    if (name == a_crumb[0])
      return unescape(a_crumb[1]);
  }
  return null;
}

function set_cookie(name, value, path, expires)
{
  path_str = (path) ? '; path=' + path : '; path=/';
  expires_str = (expires) ? '; expires=' + expires : '';

  cookie_str = name + '=' + value + path_str + expires_str;

  document.cookie = cookie_str;
}

function remove_cookie(name, path)
{
  set_cookie(name, 0, path, '1/1/1980');
}

function add_cookie_element(cookie_name, element)
{
  cookie_elements = get_cookie(cookie_name);
  if (cookie_elements == null || cookie_elements == 'undefined')
    cookie_elements_array = new Array();
  else
    cookie_elements_array = cookie_elements.split(',');
  present = 0;
  for(i=0; i<cookie_elements_array.length; i++)
    if (cookie_elements_array[i] == element)
    {
      present = 1;
      break;
    }
  if (!present)
  {
    cookie_elements_array.push(element);
    new_cookie_elements = cookie_elements_array.join(',');
    set_cookie(cookie_name, new_cookie_elements);
  }
}

function remove_cookie_element(cookie_name, element)
{
  cookie_elements = get_cookie(cookie_name);
  if (cookie_elements == null || cookie_elements == 'undefined')
    cookie_elements_array = new Array();
  else
    cookie_elements_array = cookie_elements.split(',');
  new_cookie_elements_array = new Array();
  present = 0;
  for(i=0; i<cookie_elements_array.length; i++)
    if (cookie_elements_array[i] != element)
      new_cookie_elements_array.push(cookie_elements_array[i]);
    else
      present = 1;
  if (present)
  {
    new_cookie_elements = new_cookie_elements_array.join(',');
    set_cookie(cookie_name, new_cookie_elements);
  }
}

//makes window w(current if not specified) go to href address
function jump(href, w)
{
  if(!w)
    w = window;

  w.location.href = LOADING_STATUS_PAGE;
  w.location.href = href;
}

//makes window w(current if not specified) reload itself with new get request
function jump_change_get(get, w)
{
  href = document.location.href;
  is_get = href.indexOf('?');

  if(is_get > -1)
    href = href.substring(0, '?')//get_begin);

  jump(href + '?' + get, w);
}

function get_close_popup_handler()
{
  return opener.popups[window.name]['close_popup_handler'];
}

function get_init_popup_handler()
{
  return opener.popups[window.name]['init_popup_handler'];
}

function show_progress()
{
  popup(PROGRESS_PAGE, 'progress', 'width=500,height=230,scrollbars=no,resizable=yes,help=no,status=no,menubar=no');
  PROGRESS_IS_SHOWN = true;
}

function click_href(href, window_name)
{
  has_progress = href.indexOf('progress=1');
  if(has_progress > -1)
    show_progress();

  is_popup = href.indexOf('popup=1');
  if(is_popup > -1)
    popup(href, window_name);

  return !((has_progress > -1) || (is_popup > -1));
}

function change_form_action(form, action)
{
  if(!form)
    return;

  form.action = action;
}

function add_form_action_parameter(form, parameter, val)
{
  if(!form)
    return;

  form.action = set_http_get_parameter(form.action + '', parameter, val);
}

function add_form_hidden_parameter(form, parameter, val)
{
  if(!form)
    return;

  hidden = document.getElementById(parameter + '_hidden_parameter');
  if(hidden)
  {
    hidden.value = val;
    form.appendChild(hidden);
  }
  else
  {
    hidden = document.createElement('INPUT');
    hidden.id = parameter + '_hidden_parameter';
    hidden.type = 'hidden';
    hidden.name = parameter;
    hidden.value = val;
    form.appendChild(hidden);
  }
}

function submit_form(form, form_action)
{
  has_progress = form_action.indexOf('progress=1');
  if(has_progress > -1)
    show_progress();

  is_popup = form_action.indexOf('popup=1');
  if(is_popup > -1)
  {
    window_name = 'w' + hex_md5(form_action) + 's';
    w = popup(LOADING_STATUS_PAGE, window_name);
    form.target = w.name;
  }

  if(form_action)
    form.action = form_action;

  form.submit();
}

function submit_grid_form(button, selector_id)
{
  menu = document.getElementById(selector_id);
  action = menu.options[menu.selectedIndex].value;
  if(action != '')
    submit_form(button.form, action);
}

function process_action_control(droplist)
{
  if (typeof(droplist.value) != 'undefined')
    value = droplist.value;
  else
    value = droplist[0].value;

  submit_form(droplist.form, value);
}

function sync_action_controls(obj)
{
  col = obj.form.elements[obj.name];
  if (typeof(col.length) != 'undefined' && col.length>0)
    for(i=0; i<col.length; i++)
    {
      col(i).selectedIndex = obj.selectedIndex;
    }
}

function transfer_value(target_id, transfer_value)
{
  obj = document.getElementById(target_id);
  if(obj)
  {
    obj.value = transfer_value;
  }
}

function transfer_img_src(target_id, transfer_src)
{
  obj = document.getElementById(target_id);
  if(obj)
  {
    obj.src = transfer_src;
  }
}

function goto_page(message, href)
{
  if (confirm(message))
    jump(href)
}

function open_page(message, href, window_name, window_params)
{
  if (typeof(window_name) == 'undefined' || window_name == null)
    window_name = '_generate';

  if (typeof(window_params) == 'undefined' || window_params == null)
    window_name = 'height=400,width=600,status=yes,toolbar=no,menubar=no,location=no,scrollbars=yes,resizable=yes';

  if (confirm(message))
    popup(href, window_name, window_params)
}

function bulk_options(start, end, selected, options_attrs)
{
  options = '';
  for(i = start; i <= end; i++)
    if (i == selected) options += '<option value=' + i + ' selected ' + options_attrs + '>'+i;
      else options += '<option value=' + i + ' ' + options_attrs + '>'+i;
  document.write(options)
}

//MD5 stuff

var hexcase = 0;  /* hex output format. 0 - lowercase; 1 - uppercase        */
var b64pad  = ""; /* base-64 pad character. "=" for strict RFC compliance   */
var chrsz   = 8;  /* bits per input character. 8 - ASCII; 16 - Unicode      */

/*
 * These are the functions you'll usually want to call
 * They take string arguments and return either hex or base-64 encoded strings
 */
function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
function str_md5(s){ return binl2str(core_md5(str2binl(s), s.length * chrsz));}

function core_md5(x, len)
{
  /* append padding */
  x[len >> 5] |= 0x80 << ((len) % 32);
  x[(((len + 64) >>> 9) << 4) + 14] = len;

  var a =  1732584193;
  var b = -271733879;
  var c = -1732584194;
  var d =  271733878;

  for(var i = 0; i < x.length; i += 16)
  {
    var olda = a;
    var oldb = b;
    var oldc = c;
    var oldd = d;

    a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
    d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
    c = md5_ff(c, d, a, b, x[i+ 2], 17,  606105819);
    b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
    a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
    d = md5_ff(d, a, b, c, x[i+ 5], 12,  1200080426);
    c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
    b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
    a = md5_ff(a, b, c, d, x[i+ 8], 7 ,  1770035416);
    d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
    c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
    b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
    a = md5_ff(a, b, c, d, x[i+12], 7 ,  1804603682);
    d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
    c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
    b = md5_ff(b, c, d, a, x[i+15], 22,  1236535329);

    a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
    d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
    c = md5_gg(c, d, a, b, x[i+11], 14,  643717713);
    b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
    a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
    d = md5_gg(d, a, b, c, x[i+10], 9 ,  38016083);
    c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
    b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
    a = md5_gg(a, b, c, d, x[i+ 9], 5 ,  568446438);
    d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
    c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
    b = md5_gg(b, c, d, a, x[i+ 8], 20,  1163531501);
    a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
    d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
    c = md5_gg(c, d, a, b, x[i+ 7], 14,  1735328473);
    b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);

    a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
    d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
    c = md5_hh(c, d, a, b, x[i+11], 16,  1839030562);
    b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
    a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
    d = md5_hh(d, a, b, c, x[i+ 4], 11,  1272893353);
    c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
    b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
    a = md5_hh(a, b, c, d, x[i+13], 4 ,  681279174);
    d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
    c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
    b = md5_hh(b, c, d, a, x[i+ 6], 23,  76029189);
    a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
    d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
    c = md5_hh(c, d, a, b, x[i+15], 16,  530742520);
    b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);

    a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
    d = md5_ii(d, a, b, c, x[i+ 7], 10,  1126891415);
    c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
    b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
    a = md5_ii(a, b, c, d, x[i+12], 6 ,  1700485571);
    d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
    c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
    b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
    a = md5_ii(a, b, c, d, x[i+ 8], 6 ,  1873313359);
    d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
    c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
    b = md5_ii(b, c, d, a, x[i+13], 21,  1309151649);
    a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
    d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
    c = md5_ii(c, d, a, b, x[i+ 2], 15,  718787259);
    b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);

    a = safe_add(a, olda);
    b = safe_add(b, oldb);
    c = safe_add(c, oldc);
    d = safe_add(d, oldd);
  }
  return Array(a, b, c, d);

}

function md5_cmn(q, a, b, x, s, t)
{
  return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
}
function md5_ff(a, b, c, d, x, s, t)
{
  return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t)
{
  return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t)
{
  return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t)
{
  return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}

function core_hmac_md5(key, data)
{
  var bkey = str2binl(key);
  if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);

  var ipad = Array(16), opad = Array(16);
  for(var i = 0; i < 16; i++)
  {
    ipad[i] = bkey[i] ^ 0x36363636;
    opad[i] = bkey[i] ^ 0x5C5C5C5C;
  }

  var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
  return core_md5(opad.concat(hash), 512 + 128);
}

function safe_add(x, y)
{
  var lsw = (x & 0xFFFF) + (y & 0xFFFF);
  var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
  return (msw << 16) | (lsw & 0xFFFF);
}

function bit_rol(num, cnt)
{
  return (num << cnt) | (num >>> (32 - cnt));
}

function str2binl(str)
{
  var bin = Array();
  var mask = (1 << chrsz) - 1;
  for(var i = 0; i < str.length * chrsz; i += chrsz)
    bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
  return bin;
}

function binl2str(bin)
{
  var str = "";
  var mask = (1 << chrsz) - 1;
  for(var i = 0; i < bin.length * 32; i += chrsz)
    str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask);
  return str;
}

function binl2hex(binarray)
{
  var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
  var str = "";
  for(var i = 0; i < binarray.length * 4; i++)
  {
    str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
           hex_tab.charAt((binarray[i>>2] >> ((i%4)*8  )) & 0xF);
  }
  return str;
}

function binl2b64(binarray)
{
  var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  var str = "";
  for(var i = 0; i < binarray.length * 4; i += 3)
  {
    var triplet = (((binarray[i   >> 2] >> 8 * ( i   %4)) & 0xFF) << 16)
                | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
                |  ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
    for(var j = 0; j < 4; j++)
    {
      if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
      else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
    }
  }
  return str;
}

function var_dump(obj, level)
{
  if(level>10) return '';

  var res = '';
  var shift = "";

  for(i=0; i<level*2; i++)
    shift+="\t\t";

  if(typeof(obj)=='object')
  {
    try
    {
      for(key in obj)
      {
        if(obj[key] == 'none' || obj[key] == '' || obj[key]==null) continue;

        if(typeof(obj[key]) == 'unknown' || typeof(obj[key]) == 'undefined') continue;

        res += shift + key + ' = ' + obj[key] + '\n';
        res += var_dump(obj[key], level++);
      }
    }
    catch(e){}
  }
  return res;
}

function scramble(str, offset)
{
  if (!offset) offset = 1;

  var r = '';
  for(var i=0;i<str.split('').length;i++)
    r += String.fromCharCode(str.split('')[i].charCodeAt(0) + offset);
  return r
}

function get_msn_status_icon(email, icon_set)
{
  if (!icon_set) icon_set = 3;

  st = "<img alt='" + email + "' title='" + email + "' onerror='this.onerror=null;this.src=\"http://www.the-server.net/osi" + icon_set + "/image/msnunknown.gif\";' src='http://www.the-server.net/osi" + icon_set + "/msn/" + email + "' align='absMiddle' border='0' />"

  return st;
}

function get_icq_status_icon(icq_number, icon_set)
{
  if (!icon_set) icon_set = 5;

  st = "<img alt='" + icq_number + "' title='" + icq_number + "' src='http://online.mirabilis.com/scripts/online.dll?icq=" + icq_number + "&img=" + icon_set + "' align='absMiddle' border='0' />"

  return st;
}

function containsDOM (container, containee) {
  var isParent = false;
  do {
    if ((isParent = container == containee))
      break;
    containee = containee.parentNode;
  }
  while (containee != null);
  return isParent;
}

function checkMouseEnter (element, evt) {
  if (element.contains && evt.fromElement) {
    return !element.contains(evt.fromElement);
  }
  else if (evt.relatedTarget) {
    return !containsDOM(element, evt.relatedTarget);
  }
}

function checkMouseLeave (element, evt) {
  if (element.contains && evt.toElement) {
    return !element.contains(evt.toElement);
  }
  else if (evt.relatedTarget) {
    return !containsDOM(element, evt.relatedTarget);
  }
}