if (navigator.platform.indexOf("Mac") >= 0) {
if (navigator.userAgent.indexOf("MSIE 5") >= 0)
document.writeln('');
else if (navigator.userAgent.indexOf("MSIE 4.") >= 0)
document.writeln('');
else if ((navigator.appName=="Netscape")&&(parseInt(navigator.appVersion)>=5))
document.writeln('');
else if ((navigator.appName=="Netscape")&&(parseInt(navigator.appVersion)>=4))
document.writeln('');
else
document.writeln('');
} else {
if ((navigator.appName=="Microsoft Internet Explorer")&&(navigator.appVersion.indexOf("4.")>=0))
document.writeln('');
else if((navigator.appName=="Netscape")&&(navigator.appVersion.indexOf("4.")>=0))
document.writeln('');
else if((navigator.appName=="Netscape")&&(navigator.appVersion.indexOf("5.")>=0))
document.writeln('');
else
document.writeln('');
}