if(navigator.appName == "Netscape"){
if(navigator.appVersion.indexOf("Mac") != -1 && navigator.appVersion.substring(0,1)<= 4 ){
document.writeln('');
}else if(navigator.appVersion.substring(0,1) >= 5){
document.writeln('');
}else{
document.writeln('');
}
}else if(navigator.appName == "IE"){
document.writeln('');
}else{
document.writeln('');
}