function BrowserCheck() {
  var b = navigator.appName
  if (b=="Netscape") this.b = "ns"
  else if (b=="Microsoft Internet Explorer") this.b = "ie"
  else this.b = b
  this.version = navigator.appVersion
  this.v = parseInt(this.version)
  this.ns = (this.b=="ns" && this.v>=4)
  this.ns4 = (this.b=="ns" && this.v==4)
  this.ns5 = (this.b=="ns" && this.v==5)
  this.ie = (this.b=="ie" && this.v>=4)
  this.ie4 = (this.version.indexOf('MSIE 4')>0)
  this.ie5 = (this.version.indexOf('MSIE 5')>0)
  this.min = (this.ns||this.ie)
  
}
is = new BrowserCheck()

if  (is.ie4)
{
  
  document.write('<link rel="stylesheet" type="text/css" href="../css/nav_corpo.css">');  
  document.write('<link rel="stylesheet" type="text/css" href="../css/corporate_ie.css">');
  window.winref_ie4=window.open('about:blank','ie4','width=10,height=10,left=2048');
  window.winref_ie4.close();
  
}
else if(is.ie5)
{

  document.write('<link rel="stylesheet" type="text/css" href="../css/nav_corpo.css">');  
  document.write('<link rel="stylesheet" type="text/css" href="../css/corporate_ie.css">');
  
}
else
{

  document.write('<link rel="stylesheet" type="text/css" href="../css/nav_corpo.css">');  
  document.write('<link rel="stylesheet" type="text/css" href="../css/corporate_ns.css">');
}