/**
 * Default browser check class
 * @construcotr
 */
function roundcube_browser()
  {
  this.ver = parseFloat(navigator.appVersion);
  this.appver = navigator.appVersion;
  this.agent = navigator.userAgent;
  this.name = navigator.appName;
  this.vendor = navigator.vendor ? navigator.vendor : '';
  this.vendver = navigator.vendorSub ? parseFloat(navigator.vendorSub) : 0;
  this.product = navigator.product ? navigator.product : '';
  this.platform = String(navigator.platform).toLowerCase();
  this.lang = (navigator.language) ? navigator.language.substring(0,2) :
              (navigator.browserLanguage) ? navigator.browserLanguage.substring(0,2) :
              (navigator.systemLanguage) ? navigator.systemLanguage.substring(0,2) : 'en';

  this.win = (this.platform.indexOf('win')>=0) ? true : false;
  this.mac = (this.platform.indexOf('mac')>=0) ? true : false;
  this.linux = (this.platform.indexOf('linux')>=0) ? true : false;
  this.unix = (this.platform.indexOf('unix')>=0) ? true : false;

  this.dom = document.getElementById ? true : false;
  this.dom2 = (document.addEventListener && document.removeEventListener);

  this.ie = (document.all) ? true : false;
  this.ie4 = (this.ie && !this.dom);
  this.ie5 = (this.dom && this.appver.indexOf('MSIE 5')>0);
  this.ie6 = (this.dom && this.appver.indexOf('MSIE 6')>0);
  this.ie7 = (this.dom && this.appver.indexOf('MSIE 7')>0);

  this.mz = (this.dom && this.ver>=5);  // (this.dom && this.product=='Gecko')
  this.ns = ((this.ver<5 && this.name=='Netscape') || (this.ver>=5 && this.vendor.indexOf('Netscape')>=0));
  this.ns6 = (this.ns && parseInt(this.vendver)==6);  // (this.mz && this.ns) ? true : false;
  this.ns7 = (this.ns && parseInt(this.vendver)==7);  // this.agent.indexOf('Netscape/7')>0);
  this.safari = (this.agent.toLowerCase().indexOf('safari')>0 || this.agent.toLowerCase().indexOf('applewebkit')>0);
  this.konq   = (this.agent.toLowerCase().indexOf('konqueror')>0);

  this.opera = (window.opera) ? true : false;

  if(this.opera && window.RegExp)
    this.vendver = (/opera(\s|\/)([0-9\.]+)/i.test(navigator.userAgent)) ? parseFloat(RegExp.$2) : -1;
  else if(!this.vendver && this.safari)
    this.vendver = (/(safari|applewebkit)\/([0-9]+)/i.test(this.agent)) ? parseInt(RegExp.$2) : 0;
  else if((!this.vendver && this.mz) || this.agent.indexOf('Camino')>0)
    this.vendver = (/rv:([0-9\.]+)/.test(this.agent)) ? parseFloat(RegExp.$1) : 0;
  else if(this.ie && window.RegExp)
    this.vendver = (/msie\s+([0-9\.]+)/i.test(this.agent)) ? parseFloat(RegExp.$1) : 0;
  else if(this.konq && window.RegExp)
    this.vendver = (/khtml\/([0-9\.]+)/i.test(this.agent)) ? parseFloat(RegExp.$1) : 0;


  // get real language out of safari's user agent
  if(this.safari && (/;\s+([a-z]{2})-[a-z]{2}\)/i.test(this.agent)))
    this.lang = RegExp.$1;

  this.dhtml = ((this.ie4 && this.win) || this.ie5 || this.ie6 || this.ns4 || this.mz);
  this.vml = (this.win && this.ie && this.dom && !this.opera);
  this.pngalpha = (this.mz || (this.opera && this.vendver>=6) || (this.ie && this.mac && this.vendver>=5) ||
                   (this.ie && this.win && this.vendver>=5.5) || this.safari);
  this.opacity = (this.mz || (this.ie && this.vendver>=5.5 && !this.opera) || (this.safari && this.vendver>=100));
  this.cookies = navigator.cookieEnabled;
  
  // test for XMLHTTP support
  this.xmlhttp_test = function()
    {
    var activeX_test = new Function("try{var o=new ActiveXObject('Microsoft.XMLHTTP');return true;}catch(err){return false;}");
    this.xmlhttp = (window.XMLHttpRequest || (window.ActiveXObject && activeX_test())) ? true : false;
    return this.xmlhttp;
    }
  }

var bw = new roundcube_browser();