/*
* this script parses the "http-accept-language" header
* and redirects appropriately if no language identifier
* is present in "window.location.pathname"
*/

var langDefault = 'de';
var languages = ['de','en','fr','it','es','zh','ru'];
var navtitles = ['willkommen','welcome','bienvenue','benvenuti','bienvenido','welcome','willkommen'];

var langheaders = "en-us,en;q=0.5";langheaders = langheaders.split(',');


var langDefined = (function() {

    var language = window.location.pathname.split('/')[1];  
    for (var i=0; i<languages.length; i++) 
    {
      if (language == languages[i]) return language;
    }
    
}());

var langPreferred = function() {

    for (var i=0; i<langheaders.length; i++) 
    {
      for (var j=0; j<languages.length; j++) 
      {
        if (languages[j] == langheaders[i].substring(0,2)) 
        {
          return languages[j];
        }
      }
    }
    return langDefault;
}

var entrypage = function() {
    
    var _langPreferred = langPreferred();
    for (var i=0; i<languages.length; i++) 
    {
      if (_langPreferred == languages[i]) return navtitles[i];              
    }  
    
}


if (!langDefined) 
{
  window.location.pathname = typeof(homepage) != 'undefined' ?  
    '/'+ langPreferred() + '/'+ entrypage() : 
    '/'+ langPreferred() + window.location.pathname;  
} 
else if (typeof(homepage) != 'undefined') 
{
  window.location.pathname = '/'+ langPreferred() + '/'+ entrypage();
}