var vNum = navigator.appVersion.charAt(0);
var bName = navigator.appName.charAt(0);
if(navigator.appVersion.indexOf("Mac") > -1)
{
if( bName == "M"){
// MAC IE
document.writeln("");
}
else
{
if( vNum < 5 ){
// MAC NETSCAPE 4.x
document.writeln("");
}
else{
// MAC NETSCAPE 7.x~
document.writeln("");
}
}
}
else
{
if( bName == "M"){
// WIN IE
document.writeln("");
}
else{
if( vNum < 5 ){
// WIN NETSCAPE 4.x
document.writeln("");
}
else{
// WIN NETSCAPE 6.x~
document.writeln("");
}
}
}