var check;
check = GetCookie("PassePartoutCheckOS");

if (check == null){

var br=new Array(4);
var os=new Array(2);
var text;
    
os=getOS();
br=getBrowser();
text =  br[0]+"\t";
text += br[1]+"\t";
text += getMajorVersion(br[1])+"\t";
text += getMinorVersion(br[1])+"\t";
text += br[2]+"\t";
text += br[3]+"\t";
text += getFullUAString()+"\t";
text += os[0]+"\t";
text += os[1];
SetCookie("PassePartoutCheckOS", text);

}