var browserName = navigator.appName;
var b_version=navigator.appVersion;
var version=parseFloat(b_version);
//alert(browserName+version);

if (browserName == "Netscape" ){
	if (version <"5.0"){
		alert("You are using an older browser, this may cause some errors; we recommend upgrading  to the latest version!");
		}
	document.write('<link href= "scripts/ff.css"  rel="stylesheet" type="text/css" />')

}else if(browserName == "Microsoft Internet Explorer" ){
	if (version <"4.0"){
		alert("You are using an older browser, this may cause some errors; we recommend upgrading  to the latest version!");
		}
	document.write('<link href= "scripts/ie.css"  rel="stylesheet" type="text/css" />')

}else {
	
	
	document.write('<link href= "scripts/ff.css"  rel="stylesheet" type="text/css" />')
}