// JavaScript Document
function bw_check()
  {
  is_major      = parseInt(navigator.appVersion);
  this.nver     = is_major;
  this.ver      = navigator.appVersion;
  this.agent    = navigator.userAgent;
  this.dom      = document.getElementById ? 1 : 0;
  this.opera    = window.opera ? 1 : 0;

  this.ie5      = (this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera) ? 1 : 0;
  this.ie6      = (this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera) ? 1 : 0;
  this.ie4      = (document.all && !this.dom && !this.opera) ? 1 : 0;
  this.ie       = this.ie4 || this.ie5 || this.ie6;
  this.mac      = this.agent.indexOf("Mac")>-1;
  this.ns6      = (this.dom && parseInt(this.ver)>=5) ? 1 : 0;
  this.ie3      = (this.ver.indexOf("MSIE") && (is_major<4));
  this.hotjava  = (this.agent.toLowerCase().indexOf('hotjava')!=-1) ? 1 : 0;
  this.ns4      = (document.layers && !this.dom && !this.hotjava) ? 1 : 0;
  this.bw       = (this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera);
  this.ver3     = (this.hotjava || this.ie3);
  this.opera7   = ((this.agent.toLowerCase().indexOf('opera 7')>-1) || (this.agent.toLowerCase().indexOf('opera/7')>-1));
  this.operaOld = this.opera && !this.opera7;
  return this;
  }