if
((navigator.appVersion.indexOf("Mac") != -1) && (navigator.appName.indexOf("Netscape") != -1))
{
document.write('');
}
else if
((navigator.appVersion.indexOf("Mac") != -1) && (navigator.appName.indexOf("Microsoft Internet Explorer") != -1))
{
document.write('');
}
else if
((navigator.appVersion.indexOf("Win") != -1) && (navigator.appName.indexOf("Netscape") != -1))
{
document.write('');
}
else if
((navigator.appVersion.indexOf("Win") != -1) && (navigator.appName.indexOf("Microsoft Internet Explorer") != -1))
{
document.write('');
}
else
{
document.write('');
}