if ((navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.indexOf("MSIE 5.0")==-1)){
document.write('<SCRIPT src=\"ng55.js\" type=\"text/javascript\"></SCRIPT>');
}else{
if (navigator.appName=="Netscape") {document.write('<SCRIPT src=\"ng55.js\" type=\"text/javascript\"></SCRIPT>');}
else {document.write('<SCRIPT src=\"ng50.js\" type=\"text/javascript\"></SCRIPT>');}
}