if (navigator.userAgent.indexOf("Opera")!= -1) {
	browser = "opera";
} else if (navigator.appName.indexOf("Netscape")!= -1) {
		if (navigator.appVersion.substr(0,1) <= "4") {
		browser = "nc4";
		} else{
		browser = "nc6";
		}
} else if (navigator.userAgent.indexOf("MSIE")!= -1) {
	browser = "ie";
} else {
	browser = "misc";
} 

if (navigator.userAgent.indexOf("Mac") != -1) {
document.write('<link rel="stylesheet" href="css/miles.css" type="text/css">');
} else if (browser == "opera") {
document.write('<link rel="stylesheet" href="css/miles.css" type="text/css">');
} else if (browser == "nc4") {
document.write('<link rel="stylesheet" href="css/miles_nc4.css" type="text/css">');
} else if (browser == "nc6") {
document.write('<link rel="stylesheet" href="css/miles_nc6.css" type="text/css">');
} else if (browser == "ie"){
document.write('<link rel="stylesheet" href="css/miles_win_ie.css" type="text/css">');
} else {
document.write('<link rel="stylesheet" href="css/miles.css" type="text/css">');
}